Procedure for establishing list of permissible miners' safety lamps; character of tests, conditions under which lamps will be tested, and fees [approved] December 20, 1920 [microform]

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Bibliographic Details
Corporate Author: United States. Bureau of Mines
Format: Government Document Book
Language:English
Published: Washington : Govt Print. Off, 1921.
Series:Schedule (United States. Bureau of Mines) ; 7A.
Subjects:

MARC

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