Parson Ruben L <br/><br/>
Conserving American resources 
Parson Ruben L 
 - 2 
 - Englew  Cliffs New Jerssy Prentice Hall USA       1964 
 - xii,521p  cm. 
<br/><br/> Index:P509-21 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geoparphy
<br/><br/><label>Dewey Class. No.: </label>U671.73.N6, K4