TY  - BOOK
T1  - The noise of mobile machines used in surface coal mines :operator exposure, source diagnosis, potential noise control treatments /
DA  - 1979.
CY  - Washington :
AU  - Unger, E. E.
CN  - TN813
CN  - TN813
PB  - Office of the Assistant Director--Mining, Bureau of Mines, U.S. Dept. of the Interior,
PP  - Washington :
PY  - 1979.
ID  - 32530
KW  - Strip mining.
KW  - Coal-mining machinery
KW  - Noise control.
TI  - The noise of mobile machines used in surface coal mines :operator exposure, source diagnosis, potential noise control treatments /
ER  -