TY  - BOOK
AU  - William C. Walton
TI  - Groundwater resource evaluation
U1  - 551.49 
PY  - 1970///
CY  - New York
PB  - Mcgraw Hill Book Co
N1  - William C. Walton: Groundwater resource evaluation.  New York.  Mcgraw Hill Book Co, 1970.--(551.49WAL)
ER  -