TY  - BOOK
ED  - United States.
TI  - Some rules for the safeguarding of hazardous machinery
AV  - HD7273 .U55 1936
U1  - 331.82315 
PY  - 1936///
CY  - Washington
PB  - U.S. Govt. print. off.
KW  - Machinery
KW  - Safety appliances
KW  - Industrial safety
N1  - At head of title: United States Dept. of labor ... Division of labor standards ...; Loose-leaf
ER  -