Carruthers, Margaret W.. <br/><br/>
Pioneers of Geology/ 
Margaret W. Carruthers. 
 - 143 s. ;  20 sm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Jeoloji (yer bilimi)
<br/><br/><label>Dewey Class. No.: </label>900