Orr, Robert Thomas,  1908- <br/><br/>
Animals in migration / 
by Robert T. Orr 
 - New York :  Macmillan,  1970 
 - xv, 303 p. :  ill. ;  24 cm. 
<br/><br/>Bibliography: p. 271-288 
<br/><br/><label>ISBN: </label> USD 12.50 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Animal migration<br/>Animal navigation<br/>Animal homing
<br/><br/><label>Dewey Class. No.: </label>591.52