Use wrenches the safe way.

Use wrenches the safe way. - [Washington, U.S. Govt. Print. Off., 1951] - 12 p. illus. 23 cm. - Its Bulletin, no. 148 . - Bulletin (United States. Bureau of Labor Standards) ; 148. .

Cover title.

l 51000160


Wrenches.
Industrial accidents.

TJ1201.W8 / U5 1951

331.823

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