Bradley, Wilmot Hyde,  1899- <br/><br/>
Origin and microfossils of the oil shale of the Green River formation of Colorado and Utah, 
by Wilmot H. Bradley. 
 - Washington,  U.S. Govt. Print. Off.,  1931. 
 - vi, 58 p.  incl. maps, tables, diagr.  28 p. (incl. fold. map, 5 fold diagr.)  29 cm. 
 - U. S.  Geological Survey.  Professional paper 168 .
<br/><br/> At head of title: United States Department of the Interior. 
<br/><br/>Bibliographical foot-notes. 
<br/><br/><label>LCCN: </label>gs 31000269  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Oil-shales.<br/>Paleontology--Colorado.<br/>Paleontology--Utah.<br/>Micropaleontology--Colorado.<br/>Micropaleontology--Utah.
<br/><br/><label>LC Class. No.: </label>QE75  / .P9 no. 168 
<br/><br/><label>Gov. Doc. Class. No.: </label>I 19.16:168