Unifying concepts in ecology 

 - The Hague:    W Junk,   1975 
 - 302p. 
<br/><br/><label>Subjects--Topical Terms: </label>
<br/><br/><label>Subjects--Index Terms: </label>Ecology 
<br/><br/><label>Universal Decimal Class. No.: </label>577.4(082.2)  / L5