TY  - BOOK
AU  - Viessman Warren
AU  -  Knapp J W
AU  -  Lewis G L
TI  - Introduction to hydrology
T2  - IEP series in civil engineering
U1  - H422, L7 
PY  - 1977///
CY  - New York    
PB  -  Harper and Row      
KW  -  Action of water
KW  -  Hydrology
KW  - Geology
N1  - Appendix (p
ER  -