Visnapuu, A. <br/><br/>
Recovery of critical metals by carbonyl processing / 
by A. Visnapuu and L.C. George. 
 - Pittsburgh, Pa. :  U.S. Dept. of the Interior, Bureau of Mines,  1987. 
 - 18 p. 
 - Report of investigations ;  9087 .
 - Report of investigations (United States. Bureau of Mines) ;  9087. .
<br/><br/><label>LCCN: </label>89070125     
<br/><br/><label>Subjects--Topical Terms: </label><br/>Metallurgy.<br/>Carbonyl compounds.<br/>Strategic materials.