A Manual on Methods for the Assessment of Secondary Productivity in Fresh Waters: IBP Handbook No.17 

 - London,  International Biological Programme,  1971, 
 - xxiv, 358p.  21cm. 
<br/><br/><label>ISBN: </label>0632064307 
<br/><br/><label>Subjects--Topical Terms: </label><br/>A Manual on Methods for the Assessment<br/>Secondary Productivity in Fresh Waters
<br/><br/><label>Dewey Class. No.: </label>632.2.052.2  / MAN