May, Alexander. <br/><br/>
Assessment of phosphogypsum as a constituent of aggregate material / 
by A. May, J.R. Cobble, and J.W. Sweeney. 
 - [Washington, D.C.] :  U.S. Dept. of the Interior, Bureau of Mines,  1985. 
 - 21 p. :  ill. 
 - Report of investigations ;  8939. .
 - Report of investigations (United States. Bureau of Mines) ;  8939. .
<br/><br/>Bibliography: p. 19-21. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Aggregates (Building materials).<br/>Phosphate industry--Waste disposal.--Florida<br/>Phosphogypsum.
<br/><br/><label>LC Class. No.: </label>TN 23  TA455.G9  / .U43 no. 8939