Coates, Donald R. (Ed.) <br/><br/>
Enviromental geomorphology and landscape conservation : Vol.1... prior to 1900 

 - Pennsylvania  Dowden Hutchinson & Ross  1972 
 - Benchmark papers in geology .
<br/><br/><label>Subjects--Topical Terms: </label><br/>U21
<br/><br/><label>Dewey Class. No.: </label>U21  / K2.1