Campbell, John R.,  1933- <br/><br/>
The science of animals that serve humanity / 
John R. Campbell, John F. Lasley. 
 - 3rd ed. 
 - New York:  McGraw-Hill,  1985. 
 - 834p.:  ill.;  24cm 
<br/><br/> Rev. ed. of: The science of animals that serve mankind. 2nd ed. 1975. 
<br/><br/>Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Livestock.