Corundum

Author:	Metcalf, Robert W.
Year:	1944
Document Type:	USBI
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.27:7295
Series:	Information circular / United States Department of the Interior, Bureau of Mines ;
Report Number:	7295
Subject:	Corundum
Link:	https://hdl.handle.net/2027/mdp.39015077571035