Johnson, Geoffrey. <br/><br/>
Profitable pig farming 

 - 4 ed. 
 - Ipswich, Suffolk :  Farming Press,  1973 
 - 207 p.  : ilus. ; láms 
<br/><br/><label>LCCN: </label>17286 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ganado porcino.
<br/><br/><label>Dewey Class. No.: </label>636.4  / J6 1973