Principles of mineral conservation.

Bibliographic Details
Main Author:	Myers, W. M. (William Marsh), 1892-1951
Format:	Book
Language:	English
Published:	State College, Pa. : Pennsylvania State College, School of Mineral Industries, [1946]
Series:	E & MS experiment station circular ; no. 25.
Subjects:	Mines and mineral resources > United States.

Description
Physical Description:	19 pages ; 23 cm.