Cost of cultivation of agricultural crops  Yala 1990 

 - Peradeniya  Dept. of Agriculture  1991 
 - 50 p. 
 - Agricultural economics study .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Financial aspects
<br/><br/><label>Dewey Class. No.: </label>338.13  / COS