http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Hydrogeologic atlas, Hampstead quadrangle, Baltimore and Carroll counties, Maryland
5 maps : color ; 58 x 45 cm., jointly folded in envelope 29 x 23 cm. + text (6 pages : location map, diagram, table of contents ; 28 cm.)
Map 1. Slope of the land surface / prepared by Photo Science, Inc. -- Map 2. Location of wells, springs, and test holes / by Mark T. Duigon and John T. Hilleary -- Map 3. Depth to the water table / by Mark T. Duigon -- Map 4. Availability of ground water / by Mark T. Duigon -- Map 5. Geohydrologic constraints on septic systems / by Mark T. Duigon.
by Mark T. Duigon ; prepared in cooperation with the United States Geological Survey, the Baltimore County Department of Planning and Zoning, and the Carroll County Commissioners.
Hydrogeologic data printed on USGS topographic base.
Relief shown by contours and spot heights.
Includes text and location map; some sheets also include indexed table of wells and/or graphs.
Bibliography on some sheets and in accompanying text.