TY  - BOOK
ED  - United States.
ED  - U.S.
TI  - NIOSH manual of sampling data sheets: supplement to the 1977 edition 
U1  - 363.7363 23
PY  - 1978///
CY  - Ohio
PB  - U.S. Dept. of Health, Education, and Welfare, Public Health Service, Center for Disease Control
KW  - Environmental monitoring
KW  - Pollution
KW  - Measurement
ER  -