Roberts, Stephen J. <br/><br/>
Veterianary obstetrics and genital diseases (Theriogenecology) 

 - 2nd edition 
 - Ithaca, New York  1971 
 - 776 pages  Illustrations ;  28 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Genital diseases<br/>Obstetrics