The Philippines recommends for soil fertility management /  
Philippine council for agriculture and resources research and development. 
 - 1st ed. 
 - Philippine ;  Philippine council for agriculture and resources research and development ;  1979. 
 - 108p. :  ill. ;  27 cm. 
<br/><br/><label>ISBN: </label>X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>computer fundamentals.
<br/><br/><label>Dewey Class. No.: </label>005  / PHI