TY  - BOOK
AU  - Shofner,Frederick M.
TI  - Explicit calibration of the pills II system
U1  - 363.7 
PY  - 1973///
CY  - Washington, D.C.
PB  - U.S. Environmental Protection Agency
KW  - Environmental protection
KW  - Environmentalism
N1  - September 1973; EPA-600/2-73-011
ER  -