Various Authors 
Psychology Library Editions: Comparative Psychology [PDF ebook] 

Psychology Library Editions: Comparative Psychology (16 Volume set) brings together a number of titles which explore animal behaviour and learning, some in isolation but mostly comparing it with human behaviour. Research in this area looks at many different issues, using various methods and examines species from insects to primates. The series of previously out-of-print titles, originally published between 1928 and 1997, with the majority from the 1970s and 1980s, includes contributions from many highly respected authors.