Sri Lanka. Department of Agriculture <br/><br/>
Cost of cultivation of agricultural crops  : 2012 yala - vol 63 

 - Peradeniya  Department of Agriculture  2013 
 - xi, 81 p.  hbk. : tables, digs. ;   21 cm 
<br/><br/> ht 
<br/><br/><label>Dewey Class. No.: </label>338.1  / SRI