Phosphorus and potassium in the tropics / 
edited by E. Puspharajah & Sharifuddin H.A. Hamid. 
 - Kuala Lumpur :  Malaysian Society of Soil Science,  1981. 
 - xxvi, 590 pages :  illustrations ;  23 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soils--Malaysia--Phosporus contents--Congresses.<br/>Soils--Malaysia--Potassium contents--Congresses.