Unifying concepts in ecology :  report of the plenary sessions of the first international congress of ecology, The Hague, the Netherlands, September 8-14, 1974/ 
edited by W. H. van Dobben and R. H. Lowe-McConnell 
 - London :  The Hague,  1975 
 - [2] p. leaf of plates, 302 p. :  ill., maps ;  25 cm. 
<br/><br/> Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology--Congress<br/>Ecosystems--Congress
<br/><br/><label>Dewey Class. No.: </label>574.5082