Mansfield, George Rogers,  1875-1947. <br/><br/>
Phosphate resources of Florida, 
by George R. Mansfield. 
 - Washington,  U.S. Govt. print off.,  1942. 
 - iv, 82 p.  incl. illus. (diagrs.) tables. l8 fold. pl. (incl. mpas)  24 cm. 
 - U. S. Geological survey.  Bulletin 934 .
<br/><br/> At head of title:  U. S. Dept. of the interior.  Harold L. Ickes, secretary. Geological survey, W. C. Mendenhall, director.  Four folded maps are in pocket.  Bibliographical foot-notes. 
<br/><br/><label>LCCN: </label>gs 43000014  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Phosphates--Florida.
<br/><br/><label>LC Class. No.: </label>QE75  / .B9 no. 934