Niklas O. F., 1962: Ein Gynandromorph von Gilpinia hercyniae (Hartig) (Hymenoptera: Diprionidae). 5 pp. [HYM 2770] Deutsche Entomologische Zeitschrift (N.F.) 9: 311-315.

 Niklfeld H., 1974: Die Datenerfassung für die Kartierung der Flora Mitteleuropas als Beitrag zur biogeographischen Erforschung Europas. 8 pp. (in German). [BIO 93] [M48] Folia Entomologica Hungarica (S.N.) 27(suppl.): 431-438.

 Nikolaev G. V., 1975: Obzor vidov sekcii Geotrupes s. str. (Coleoptera, Scarabaeidae). [Review of species of the section Geotrupes s. str. (Coleoptera, Scarabaeidae)]. 4 pp. (in Russian). [SCA 785] Nasekomye Mongolii 3: 110-113.

 Nikolaev G. V., 1976: O taksonomicheskom statuse rodov grupi Lasiopsis Er. (Coleoptera, Scarabaeidae, Rhizotroginae). [On the taxonomical status of the genera of the Lasiopsis Er. Group (Coleoptera, Scarabaeidae Rhizotroginae)]. 3 pp. (in Russian). [SCA 788] Nasekomye Mongolii 4: 167-169.

 Nikolaev G. V., 1976: Zametki o plastinchatousych zhukach (Coleoptera, Lamellicornia) Mongolii i sopredelnych teritorij. [Notes on Lamellicornia (Coleoptera) of Mongolia and adjacent territories]. 2 pp. (in Russian). [SCA 789] Nasekomye Mongolii 4: 165-166.

 Nikolaev G. V., 1979: Eine neue Art der Gattung Rhizotrogus Berth. (Coleoptera: Scarabaeidae) aus Kasachstan und Besonderheiten ihrer Biologie. 2 pp. [SCA 791] Folia Entomologica Hungarica (S.N.) 32(2): 173-174.

 Nikolaev G. V., 1981: Beitrag zur Kenntnis de Trochaloschema-Arten (Coleoptera: Scarabaeidae, Sericinae). 3 pp. Folia Entomologica Hungarica (S.N.) 42(2): 123-125.

 Nikolaev G. V., 1985: A description of the larva of Haplosoma ordinatum Sem. (Coleoptera, Scarabaeidae). 2 pp. (in Russian). Entomologitsheskoe obozrenie 64(2): 351-352.

 Nikolaev G. V., Shilenkov V. G., 1982: Opisanie lichinki Aegialia (Psammoporus) abdita (Nikr.) (Coleoptera, Scarabaeidae). [Description of the larva of Aegialia (Psammoporus) abdita (Nikr.) (Coleoptera, Scarabaeidae)]. 4 pp. (in Russian). [SCA 799] Nasekomye Mongolii 8: 290-293.

 Nikolaeva N. V., 1978: Čislennost krovososuščich komarov (Diptera, Culicidae) v lesnych i tundrovych biocenozach Juzhnogo Jamala. 7 pp. 

 Nikolaeva N. V., 1979: O chiščnych nasekomych, istrebljajuščich ličinok krovososuščich komarov na Juzhnom Jamale. 4 pp. 

 Nikolajev G. V., 1982: Beitrag zur Systematik der Bolbaffer-Arten (Col. Scarabaeidae). 8 pp. Deutsche entomologische Zeitschrift (N.F.) 29(1-3): 35-42.

 Nikolajev G. V., 2008: A new species of the subfamily Aphodiinae (Coleoptera: Scarabaeidae) from the lower cretaceous of Transbaikalia. 3 pp. Caucasian Entomological Bulletin 4(3): 291-293.

 Nikolajev G. V., 2009: Novye rod i vid semejstva Trogidae (Coleoptera: Scarabaeoidea) iz rannego mela Mongolii. [A new genus and species of the family Trogidae (Coleoptera: Scarabaeoidea) from the Lower Cretaceous of Mongolia.] 4 pp. Caucasian entomological bulletin 5(2): 179-182.

 Nikolajev G. V., 2010: Additional data about fauna and biology of phytophagous carrion beetles of the genus Aclypea Reitter, 1885 (Coleoptera: Silphidae) in Asia. 5 pp. Caucasian Entomological Bulletin 6(2): 143-147.

 Nikolajev G. V., 2015: A new genus of the family Glaphyridae (Coleoptera: Scarabaeoidea) from the Mesozoic of China. 5 pp. Caucasian Entomological Bulletin11(1): 19-23.

 Nikolajev G. V., 2015: About raising of the status of the subfamily Eremazinae (Coleoptera: Scarabaeoidea: Scarabaeidae) with description of new taxa from the Mesozoic in China. 5 pp. Caucasian Entomological Bulletin11(2): 297-302.

 Nikolajev G. V., 2016: About the type species of the subgenus Scelolethrus Semenov, 1892 of genus Lethrus Scopoli, 1777 (Coleoptera: Geotrupidae: Lethrinae). 2 pp. Caucasian Entomological Bulletin12(2): 243-244.

 Nikolajev G. V., 2016: Taxonomic composition of the family Trogidae (Coleoptera: Scarabaeoidea) of the Russian fauna. 11 pp. Caucasian Entomological Bulletin12(1): 81-91.

 Nikolajev G. V., Prokin A. A., 2012: On the transfer of the genus Mesydra Ponomarenko, 1977 from Hydrophilidae into Scarabaeidae (Coleoptera). 4 pp. Caucasian Entomological Bulletin 8(1): 25-28.

 Nikolajev G. V., Ren D., 2015: A new fossil Lucanidae subfamily (Coleoptera) from the Mesozoic of China. 4 pp. Caucasian Entomological Bulletin11(1): 15-18.

 Nikolei E., 1958: No 23. Untersuchungen über den Generationswechsel pädogenetischer Gallmücken. (Vorläufige Mitteilung.). 7 pp. 

 Nikolei E., 1961: Vergleichende Untersuchungen zur Fortpflanzung Heterogoner Gallmücken unter experimentellen Bedingungen. 49 pp. 

 Nikolskaja M. N., 1963: Dva novych roda agelinid (Hymenoptera, Chalcidoidea), vyvedennych iz bambukovoj ščitovki Odonaspis secreta (Ckll.) na Kavkaze. 4 pp. 

 Nikolskaya M. N., 1954: Fauna Chalcid (Hymenoptera, Chalcidoidea) rajona srednego tečenija r. Urala i ich chozjajstvennoe značenie. 28 pp. 

 Nikolskaya M. N., 1966: Novyj vid semeedov roda Megastigmus Dalm. (Hym., Torymidae) iz semjan arči polyšarovidnoj. 1 pp. 

 Nikolskij I. D., 1968: Fish voices (atlas). 1 SP gramophone record (33.33). 93 pp. (in Russian).  Discount 50%!

 Nikolskij V. V., 1988: Novyj vid gamazovych kleščej roda Antennoseius Berlese, 1916 (Parasitiformes, Gamasina) iz Sibiri. 3 pp. 

 Nikritin L. M., 1974: Morfologičeskie tipy prisposoblenija k žizni v peskach i različnych grup Aphodiinae (Coleoptera, Scarabaeidae). 2 pp. 

 Nikritin L. M., 1975: Novyj vid roda Psammoporus (Coleoptera, Scarabaeidae) iz Mongolii. [A new species of the genus Psammoporus (Coleoptera, Scarabaeidae) from Mongolia]. 2 pp. (in Russian). [SCA 802] Nasekomye Mongolii 3: 108-109.

 Nikritin L. M., 1985: Some aspects of systematics, evolution and phylogeny of dung beetles of the tribe Aphodiini (Coleoptera, Scarabaeidae). 4 pp. (in Russian). Entomologitsheskoe obozrenie 64(1): 124-127.

 Nilsson A. N., 1981: Coleoptera from a Malaise-Trap placed across a coastal stream in northern Sweden. 8 pp. 

 Nilsson A. N., 1981: Distribution of beetles (Coleoptera) on Certain Islands in the Snöan Archilepago in Northern Sweden. 21 pp. 

 Nilsson A. N., 1983: Ilybius vittiger (Gyllenhal) n. comb. (Coleoptera: Dytiscidae), with description of its larval instars. 8 pp. Entomologica scandinavica.

 Nilsson A. N., 1986: Geographic variation in Graphoderus zonatus (Coleoptera: Dytiscidae) in Sweden. 7 pp. 

 Nilsson A. N., 1986: Life cycles and habitats of the Northern European Agabini (Coleoptera: Dytiscidae). 27 pp. Entomologica Basiliensia 11: 391-417.

 Nilsson A. N., 1987: Larval morphology of Fennoscandian Oreodytes Seidlitz (Coleoptera: dytiscidae), with notes on hydroporine leg chaetotaxy and taxonomy. 10 pp. (in English). Ent. Tidskr. 108: 99-108.

 Nilsson A. N., 1989: Larvae of northern European Hydroporus (Coleoptera: Dytiscidae). 17 pp. Systematic Entomology 14(1): 99-115.

 Nilsson A. N., 1992: A revision of Afrotropical Agabus Leach (Coleoptera, Dytiscidae), and the evolution of tropicoalpine super specialists. 25 pp. Systematic Entomology 17(2): 155-179.

 Nilsson A. N., 1992: Another synonym of Agabus faldermanni Zaitzev, with a discussion of the guttatus-, nebulosus- and paludosus-groups (Coleoptera: Dytiscidae). 3 pp. Koleopterologische Rundschau 62: 43-45.

 Nilsson A. N., 1993: Five Hydropororus species new to Japan and the Kuril Islands, with additional records of other species (Coleoptera: Dytiscidae). 9 pp. (in English). Trans. Shikoky Ent. Soc. 20(2): 89-95.

 Nilsson A. N., 1994: A revision of the Palearctic Ilybius crassus-complex (Coleoptera, Dytiscidae). 7 pp. (in English). Ent. Tidskr. 115(1/2): 55-61.

 Nilsson A. N., 1994: Two new species of Agabus Leach from East Russia and North China, with notes on other species of the Agabus affinis species group (Dytiscidae). 6 pp.  Koleopterologische Rundschau 64: 45-50.

 Nilsson A. N., 1995: A new Hydroporus species from Kamchatka previously standing as H. brevis F. Sahlberg (Dytiscidae). 4 pp.  Koleopterologische Rundschau 65: 23-26.

 Nilsson A. N., 1996: A redefinition and revision of the Agabus optatus-group (Coleoptera: Dytiscidae); an example of pacific intercontinental disjunction. 31 pp. Entomologica Basiliensia 19: 621-651.

 Nilsson A. N., Hilsehoff W. L., 1991: Review of first-instar larvae of Colymbetini (Coleoptera: Dytiscidae), with a key to genera and phylogenetic analysis. 10 pp. 

 Nilsson A. N., Kholin S. K., Angus R. B., 1995: Faunistics and species richness of water beetles of the genus Helophorus (Coleoptera, Helophoridae) of the Far East of Russia and Japan. 5 pp. Japanese Journal of systematic Entomology (N.S.) 1(2): 217-221.

 Nilsson A. N., Persson S., 1989: The distribution of predaceous diving beetles (Coleoptera: Noteridae, Dytiscidae) in Sweden. 88 pp. Entomologica Basiliensia 13: 59-146.

 Nilsson J. A., Johnson C. D., 1990: A new species of palm bruchid from Cuba and a redesccription of Caryobruchus gleditsiae (L.) (Coleoptera: Bruchidae). 10 pp. The Coleopterists Bulletin 44(1): 50-59.

 Nimis P. L., Ottonello D., Tretiach M., 1996: Some new or interesting lichen records from Taormina (E Sicily). 22 pp. (in Italian). Bolletino del Museo regionale di Scienze Naturali – Torino 14(1): 117-138.