The philippines recommends for soil diagnosis and amelioration. 

 - Los Banos, Laguna :  PCARRD-DOST,  c2007. 
 - 138 p. :  ill. ;  23 cm. 
<br/><br/><label>ISBN: </label>9712005267 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soil diagnosis.