FAO <br/><br/>
Indices for Measuring Responses of Aquatic Ecological Systems to Various Human Influences: FAO Fisheries Technical Paper No.151 (FIR/T151) 

 - Rome,  Food and Agriculture Organization,  1976, 
 - 66p.  28cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Various Human Influences