Manual of methods in aquatic environment research / 
Swedish international development authority, 
 - 1st ed. 
 - Rome :  The united nations,  1983 
 - 33 p. :  tables, figs, ;  21cm 
<br/><br/><label>ISBN: </label>925101275X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Food
<br/><br/><label>Dewey Class. No.: </label>363.7  / FOM