Tolkamp, H. H. <br/><br/>
Organism-substrate relationships in lowland stream /s 
H. H. Tolkamp. 
 - Wageningen :  Centre for Agricultural Publishing and Documentation,  1980. 
 - 211 p. :  ill. ;  25 cm. 
<br/><br/><label>ISBN: </label>9022007596 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Relationships in lowland streams.