TY  - BOOK
AU  - Ward,Robert C.
AU  - Nielsen,Knud Strange
ED  - United States enviromental protection agency
ED  - Environmental Monitoring and Support Laboratory
TI  - Evaluating the sampling frequencies of water quality monitoring networks
U1  - 353.9870973 
PY  - 1978///
CY  - Nevada
PB  - United states government pinting office
KW  - Water Safety
KW  - Water monitoring
N1  - EPA-600/7-78-169; Interagency energy-environment research and development program report
ER  -