De Silva, S.S. <br/><br/>
Studies on the Fish Ponds at Pitipana, Negombo I. Seasonal and Diurnal Variation of Some Hydrobiological Factors 

 - Colombo 15 :  NARA,  1979 
 - P. 63-78 
 - Bulletin of the Fisheries Research Station Sri Lanka (Ceylon)  ; Vol.29 Nos. 1 and 2 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Aquatic Sciences