Downing J A Ed. <br/><br/>
Manual of methods for the assessment of secondary productivity in fresh waters 

 - 2 
 - Oxford  Blackwell Scientific Pub         1984 
 - xxiv, 501p.  cm. 
<br/><br/><label>Standard No.: </label>54634 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Invertebrata<br/>Zoology
<br/><br/><label>Dewey Class. No.: </label>K1:(G9557), M4