Mervyn W. Thenabad <br/><br/>
Use of fertilizer and manures in Sri Lanka 

 - National science council of Sri Lanka<br/>  1980 
 - 42p 
 - Science education services. No.5 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture
<br/><br/><label>Dewey Class. No.: </label>631.8  / THE