Zur Lebensweise und Fortpflanzungsbiologie von Melanatria fluminea (Gmelin) (Gastropoda)
Water Balance in Land Arthropods (Zoophysiology)
The Reproductive Biology of the Chelonia (Zoophysiology)
Animal Ecology To-Day (Monographiae Biologicae)
Ecophysiology of Desert Arthropods and Reptiles (Adaptations of Desert Organisms)
Evolutionary Biology of Land Isopods
Energetics of Desert Invertebrates (Adaptations of Desert Organisms)
The Marine Algal Vegetation of St. Martin, St. Eustatius and Saba (Netherlands Antilles)
Feeding, digestion and assimilation in animals (Macmillan studies in comparative zoology)
Ecophysiology of Amphibians Inhabiting Xeric Environments (Adaptations of Desert Organisms)