New water mites (Hydrachnellae, Acari) from South Africa
Viets, K.O.  New and Rare Water Mites (Hydrachnellae, Acari) from Guatemala .1
Viets, K.O.  Palpisperchon distans nov. spec. (Acari, Hydrachnellae) from Lake Baikal area
Scheffler, W.  Watermites from South Africa (Hydrachnellae, Acari)
Viets, K.O.  The seasonal occurrence of the males of Sperchon denticulatus (Hydrachnellae)
Bader, C.