The difference between the potentiometric surfaces of the upper Patapsco Aquifer in Southern Maryland, September 1990 and September 2007 /

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Bibliographic Details
Author / Creator:	Curtin, Stephen E.
Imprint:	Reston, VA : U.S. Dept. of the Interior, U.S. Geological Survey ; [Annapolis, MD] : Maryland Dept. of Natural Resources, [2009]
Description:	1 map : digital, PDF file.
Language:	English
Series:	Open- file report ; 2009-1085 U.S. Geological Survey open-file report ; 2009-1085.
Subject:	Aquifers -- Maryland, Southern -- Maps. Groundwater -- Maryland, Southern -- Maps. Water table -- Maryland, Southern -- Maps. Aquifers. Groundwater. Water table. Maryland, Southern. Maps.
Cartographic data:	Scale not given ; (W 77⁰20ʹ--W 76⁰00ʹ/N 39⁰30ʹ--N 38⁰00ʹ).
Format:	E-Resource Map U.S. Federal Government Document
URL for this record:	http://pi.lib.uchicago.edu/1001/cat/bib/7782204

Hidden Bibliographic Details
Other authors / contributors:	Andreasen, David C. Staley, Andrew W. Maryland Geological Survey. Maryland. Power Plant Topical Research Program. Geological Survey (U.S.) Maryland. Department of Natural Resources.
Notes:	Relief shown by contours and spot heights. Title from title screen (viewed on July 14, 2009). Mode of access: Internet from the USGS web site. Address as of 7/14/09: http://pubs.usgs.gov/of/2009/1085/pdf/OFR2009-1085.pdf ; current access is available via PURL.
GPO item no.:	0624-H (online)
Govt.docs classification:	I 19.76:2009-1085

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