Hediger, Heini. <br/><br/>
Studies of the psychology and behaviour of captive animals in zoos and circuses / 
translated by Geoffrey Sircom. 
 - London :  Butterworths Scientific Publications,  1955. 
<br/><br/> Translation of Skizzen zu einer Tierpsychologie im Zoo und in Zirkus. 
<br/><br/>Bibliography: p. 155-159. 
<br/><br/><label>LCCN: </label>a  56004317 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Psychology, Comparative.<br/>Animal behavior.