Correlating microfilm mine maps with topographic maps

Author:	Uhrin, David Charles.
Year:	1977
Document Type:	USBI
Issuing Agency:	Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.27:8762
Series:	Information circular - Bureau of Mines ;
Report Number:	8762
Subjects:	Mine surveying
	Mine maps
Link:	https://hdl.handle.net/2027/mdp.39015078453605