Prokopovitsh, Andrew S. <br/><br/>
Spectrophotometric determination of trace amounts of copper in tungsten metal powder 
Prokopovitsh, Andrew S. 
 - Washington  Bureau of mines  1961 
 - 7 p.  il 
 - RI  5720 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>cobre<br/>polvo<br/>tungsteno
<br/><br/><label>Universal Decimal Class. No.: </label>549