PHILLIPSON, J. <br/><br/>
Methods of study in soil ecology. Proceedings of the Paris symposium organized by Unesco and the International Biological Programme. 

 - America  Unesco  1970 
 - 303 p. 
 - Ecology and conservation 2 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>ECOLOGIA<br/>ECOLOGIA DEL SUELO<br/>PARIS
<br/><br/><label>Universal Decimal Class. No.: </label>574 PHI