TY  - GEN
AU  - Curtin, Stephen E.
AU  - Andreasen, David C.
AU  - Mack, Frederick K.
CN  - I 19.76:
CN  - QE75
CY  - Baltimore, Md. :
CY  - Denver, Colo. :
DA  - [1999]
ID  - 233396
KW  - Groundwater
KW  - Aquifers
KW  - Water table
N1  - Blackline print.
PB  - U.S. Geological Survey ;
PB  - Branch of Information Services [distributor],
PP  - Baltimore, Md. :
PP  - Denver, Colo. :
PY  - [1999]
T1  - The difference between the potentiometric surfaces of the upper Patapsco Aquifer, September 1990 and September 1997 in Southern Maryland
TI  - The difference between the potentiometric surfaces of the upper Patapsco Aquifer, September 1990 and September 1997 in Southern Maryland
VL  - 99-86
ER  -