Conservation and productivity of natural waters / 
edited by R.W. Edwards, D.J. Garrod. 
 - London :  Zoological Society of London,  1972. 
 - xv, 318 p. ;  23 cm. 
 - Symposia of the Zoological Society of London ; no. 29 .
<br/><br/> "Proceedings of a symposium organised jointly by the British Ecological Society and the Zoological Society of London, held at the Zoological Society of London on 22 and 23 October, 1970." - -t.p.  Includes indexes. 
<br/><br/>Includes bibliographies. 
<br/><br/><label>ISBN: </label>0126133298 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water conservation.<br/>Water use.<br/>Water.