Methods for Studying the Ecology of Soil Micro-organisms 

 - Blackwell Scientific  USA  1971 
 - 116p.  fig., table 
<br/><br/><label>Nat. Bib. No.: </label>4470 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture
<br/><br/><label>Universal Decimal Class. No.: </label>631.46  / PAR