Papp, John F. <br/><br/>
Chromium 1990 
by John F. Papp. 
 - Washington  Bureau of Mines  1991. 
 - [4], 34 p.  ill.  28 cm. 
<br/><br/><label>LCCN: </label>doc92000161  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Chromium--Statistics.