1. 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
2. Report of investigations Publication/Creation: Baltimore : Maryland Geological Survey, 1965- Resource Type: Journal, Newspaper or Serial Access & Availability: Loading
3. Basic data report Publication/Creation: [Baltimore] : The Survey, 1967-1970 Resource Type: Journal, Newspaper or Serial Access & Availability: Loading