Toxic effects of five common organophosphorus insecticides on some ostracods and copepods 

 - Chittagong,  Aothor  1985 
 - 154 L.  30 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Copepods: Dissertations, ACademic
<br/><br/><label>Dewey Class. No.: </label>T595.34 T627