Niedbala W., 2001: Study on the diversity of ptyctimous mites (Acari, Oribatida) and quest for centres of its origin: the fauna of the Ethiopian region. 245 pp. Discount 20%!
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6260
Niedbala W., 2002: Ptyctimous mites (Acari, Oribatida) of the Nearctic region. 261 pp. Discount 20%!