The use of drugs in animal feeds ; proceedings of simposium... 

 - Washigton :  NAS,  1969 
 - 405 p.  : ilus. 
 - NAS. Publication  ; 1679 .
 - NAS. Publication  ; 1679 .
<br/><br/><label>LCCN: </label>30560 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Antibioticos en nutricion animal.
<br/><br/><label>Dewey Class. No.: </label>636.085  / N2