Leadley Brown, Alison <br/><br/>
Ecology of fresh water / 
Alison Leadley Brown 
 - London :  Heinemann Educational,  1971 
 - xi, 129 p. :  ill. ;  21 cm. 
<br/><br/><label>ISBN: </label>0435615378 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Freshwater ecology