Blake, Henry E. <br/><br/>
Increasing fluosilicic acid evolution from phosphate rock by digestion with phosphoric acid / 
by Henry E. Blake, Jr., and Boyd D. Nash. 
 - [Washington] :  U.S. Dept. of the Interior, Bureau of Mines,  [1974]. 
 - 16 p. 
 - Report of investigations ;  7980 .
 - United States.  Bureau of Mines.  Report of investigations ;  7980 .
 - Report of investigations (United States. Bureau of Mines) ;  7980 .
<br/><br/><label>LCCN: </label>91055174     
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fluorine.<br/>Fluosilicic acid.