Keller Edward A <br/><br/>
Environmental geology 

 - 3 
 - Charles  Columbus Charles & Merril Pub Co.      1982 
 - xii, 526p.  cm. 
<br/><br/><label>Standard No.: </label>45807 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Environmental protection<br/>Geology
<br/><br/><label>Dewey Class. No.: </label>H:(G:66), L9;M2