Anstey Robert L <br/><br/>
Environments through time 

 - 2 
 - Minneapolis  Burgess Publishing        1979 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>68165 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology
<br/><br/><label>Dewey Class. No.: </label>H2z7, L9-;2-;8