TY  - BOOK
ED  - United States
TI  - Coal mine health and safety: Hearing, Ninety-first Congress, first session ... Sept. 9, 1969
AV  - KF27.E3 1969b 
U1  - 622/.33/5 
PY  - 1969///
CY  - Washington
PB  - U.S. Govt. Print. Off.
KW  - Coal mines and mining
KW  - Safety regulations
KW  - United States
KW  - Local
N1  - Hearing on H.R. 4047, 4295, and 7976
ER  -