Metal prices in the United States through 1991 / 
by the Branch of Metals and Branch of Industrial Minerals. 
 - [Washington, D.C.] :  U.S. Bureau of Mines,  [1993] 
 - 201 p. :  ill. 
<br/><br/> "The Minerals source." 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Metals--Prices--Statistics.--United States