TY  - GEN
AU  - Brown, R. H.
TI  - GROUND-WATER STUDIES
U1  - 551.49 
PY  - 1972///
CY  - Paris
PB  - Unesco
KW  - Water, Underground
KW  - Hydrology
N1  - Incorporating Supplements 1 & 2; A Contribution To The International Hydrological Decade
ER  -