Shrimp management: 

 - Colombo  Ceylon Aquatec Ltd.  [n.d.] 
 - 40 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Shrimps<br/>Shrimp Culture
<br/><br/><label>Dewey Class. No.: </label>639.58  / CEY