On the Side of the Apes: What man’s closest relatives are teaching us about ourselves.  Written by Emily Hahn.

Arena Books paperback edition published in 1972.  Serial number Y2784

Printed in the USA.

324 pages.

Original price sticker on upper right of front cover.  Light shelf wear.  Very good condition overall. 

“Fascinating… unusual glimpses into the human side of research with monkeys and apes… A chance to share in some of the excitement, rewards, and frustrations of studying our closest living relatives.”