Pomeroy L R <br/><br/>
Cycles of essential elements 

 - Pennsylvania   Dowden, Hutchinson & Ross  1974 
 - xiii,373p.  cm. 
 - Benchmark papers in ecology .
<br/><br/><label>Standard No.: </label>50619 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environment
<br/><br/><label>Dewey Class. No.: </label>G:55, L4