TY  - BOOK
AU  - Leidel,Nelson A.
AU  - Crousc,William E.
AU  - Busch,Kenneth A.
ED  - United States.
TI  - Exposure measurement action level and occupational environmental variability
U1  -  363.1790973 
PY  - 1975///
CY  - Washington, D. C.
PB  - United States Government Printing Office
KW  - Occupational diseases
KW  - United States
KW  - Environmental monitoring
ER  -