Stone, Ralph W.  1876-1964. <br/><br/>
Gypsum deposits of the United States, 
by R.W. Stone and others. 
 - Washington,  Govt. print. off.,  1920. 
 - 326 p.  illus., 36 pl. (incl. maps: part fold.) tables, diagrs.  23 cm. 
 - U.S. Geological survey. Bulletin  697 .
<br/><br/>Bibliography: p. 309-316. 
<br/><br/><label>LCCN: </label>gs 20000418  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mines and mineral resources--United States.<br/>Gypsum.
<br/><br/><label>LC Class. No.: </label>QE75  / .B9 no. 697