1. Maryland and its natural resources Publication/Creation: Baltimore : [publisher not identified], 1901 Resource Type: Book Access & Availability: Loading
2. Results of spirit leveling in Maryland, 1896 to 1911, inclusive Author/Creator: Marshall, R. B. 1867-1949, (Robert Bradford), author Publication/Creation: [Washington, D.C.] : Department of the Interior, United States Geological Survey, 1914 Resource Type: Book Access & Availability: Loading
3. The physical features of Washington County Author/Creator: Maryland. Department of Geology, Mines, and Water Resources Publication/Creation: Baltimore : [publisher not identified], 1951 Resource Type: Book Access & Availability: Loading
4. Bulletin Publication/Creation: Baltimore, Md. : Published by permission of the Director, U.S. Geological Survey, 1965- Resource Type: Journal, Newspaper or Serial Access & Availability: Loading
5. Report of investigations Publication/Creation: Baltimore : Maryland Geological Survey, 1965- Resource Type: Journal, Newspaper or Serial Access & Availability: Loading
6. Basic data report Publication/Creation: [Baltimore] : The Survey, 1967-1970 Resource Type: Journal, Newspaper or Serial Access & Availability: Loading
7. The geology of Harford County, Maryland Author/Creator: Southwick, D. L. 1936- (David Leroy) Publication/Creation: Baltimore : Maryland Geological Survey, 1969 Resource Type: Book Access & Availability: Loading
8. Map showing the difference between the potentiometric surfaces of the Magothy aquifer of September 1975 and September 1982 in Southern Maryland Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Denver, Colorado : Open-File Services Section, Western Distribution Branch, U.S. Geological Survey Resource Type: Map Access & Availability: Loading
9. Map showing the potentiometric surface of the Magothy aquifer in Southern Maryland, September 1982 Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Towson, Maryland : United States Department of the Interior, Geological Survey, 1982 Resource Type: Map Access & Availability: Loading
10. Nitrate in the Columbia aquifer, central Delmarva Peninsula, Maryland Author/Creator: Bachman, L. Joseph, author Publication/Creation: Towson, Maryland : U.S. Geological Survey, 1984 Resource Type: Book Access & Availability: Loading