Rock-dust barriers for coal mines [microform]

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Bibliographic Details
Other Authors:	Greenwald, H. P. (Harold Putnam), 1893-, Howarth, H. C. (Henry C.), 1879-, Rice, George S. (George Samuel), 1866-1950
Format:	Government Document Microfilm Book
Language:	English
Published:	Washington, D.C. : [publisher not identified], 1930.
Series:	Report of investigations (United States. Bureau of Mines) ; 2977.
Subjects:	Mineral dusts.

Norlin Library - Government Information - Microform

Holdings details from Norlin Library - Government Information - Microform
Call Number:	EBD C22.12-2977
EBD C22.12-2977	Restricted Place a Hold