English, Peter R. <br/><br/>
The sow :  improving her efficiency / 
Peter R. English, William J. Smith, Alastair MacLean. 
 - 2nd ed. 
 - Ipswich :  Farming Press,  1982. 
 - 354 p. :  ill. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sows.