The difference between the potentiometric surfaces of the upper Patapsco Aquifer, September 1990 and September 1997 in Southern Maryland /

Bibliographic Details
Main Author:	Curtin, Stephen E.
Corporate Authors:	Geological Survey (U.S.), Maryland Geological Survey, Maryland. Resource Assessment Administration
Other Authors:	Andreasen, David C., Mack, Frederick K.
Format:	Government Document Microform Map
Language:	English
Published:	Baltimore, Md. : U.S. Geological Survey ; [1999]
Series:	U.S. Geological Survey open-file report ; 99-86.
Subjects:	Groundwater > Maryland, Southern > Maps. Aquifers > Maryland, Southern > Maps. Water table > Maryland, Southern > Maps. Patapsco Aquifer > Maps.
Online Access:	https://purl.fdlp.gov/GPO/LPS84638

Description
Item Description:	Blackline print. Shipping list number: 2000-0232-M. Shipping List Date: 01/19/2000 Microform.
Physical Description:	1 map : photocopy ; 20 x 17 cm., on sheet 28 x 22 cm. Also available via Internet from the USGS web site. Address as of 8/13/07: http://pubs.usgs.gov/of/1999/ofr99-86/; current access via PURL.