The philippine recommends for conservation farming in the sloping lands vol.1 countour farming. 

 - Los Banos, Laguna :  PCARRD-DOST/IWMI,  c2001. 
 - 98 p. ;  23 cm. 
<br/><br/><label>ISBN: </label>9712004856 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Countour farming.