Vision in the Animal World
Understanding Homosexuality: Its Biological and Psychological Bases Its Biological and Psychological Basis
The Diversity of Life
Transvestites and Transsexuals: Toward a Theory of Cross-Gender Behavior (Perspectives in Sexuality)
Periodische Vorgänge in der Fortpflanzung tierischer Organismen
Biology of Earthworms
Kunst und Sexualität
Mammals
Guide to Invertebrate Animals
Heterotypical Behaviour in Man and Animals (Soviet Series; 35)
