Asia Soil Conservation Network   <br/><br/>
Regional action learning programme on the development of conservation farming systems: report of the training course in Agoo, La Union Province, Nothern Luzon, The Philippines, 25 June - 20 July 1990  (Book) 

 - Jakarta  ASOCON  1990 
 - 79 p.  30 cm. 
<br/><br/><label>Universal Decimal Class. No.: </label>631.459:631.61:631.11(047) ASI  / 5534