FAO <br/><br/>
Comparative Studies on Freshwater Fisheries: FAO Fisheries Technical Paper No.198 (FRI/T198) 

 - Rome,  Food and Agriculture Organization,  1980, 
 - 46p.  28cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Aquatic Ecosystem Typology<br/>Comparative Studies<br/>Freshwater Fisheries