Ponrajah, A.J.P. <br/><br/>
Design of irrigation headworks for small catchments 
/ [by] A.J.P.Ponrajah 
 - 2nd ed. 
 - Colombo  Irrigation Department  1984 
 - v, 97 p. 
<br/><br/><label>Dewey Class. No.: </label>627  / PON