At the crossroads the mineral problems of the United States

Sonraí bibleagrafaíochta
Príomhchruthaitheoir:	Cameron, Eugene N. (Eugene Nathan), 1910-
Formáid:	LEABHAR
Teanga:	English
Foilsithe / Cruthaithe:	New York Wiley c1986.
Ábhair:	Mines and mineral resources > United States.