KESSINGER PUB CO Sivumäärä: 348 sivua Asu: Pehmeäkantinen kirja Julkaisuvuosi: 2005, 01.06.2005 (lisätietoa) Kieli: Englanti
1927. An analysis of human behavior from a novel standpoint. Professor Ritter uses the activities of animals as a key to understanding the activities of human beings in the same way that the structure of animals has been utilized as a background for understanding the physical side of man.