Elliott, J. M <br/><br/>
Some methods for the statistical analysis of samples of benthic invertebrates 

 - 2nd ed. 
 -  Freshwater Biological Association  1977 
 - 159 p. 
 - Scientific Publication No. 25 .
<br/><br/><label>ISBN: </label>0900386290 
<br/><br/><label>Dewey Class. No.: </label>519.5  / ELL