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Author/Creator
- Mack, Frederick K.16
- Mahon, Gary L.2
- Mahoney, Elizabeth N.1
- Maine Geological Survey1
- Maine. Department of Health Services1
- Maltby, Dorothy1
- Martin, Angel1
- Martin, Edward H.1
- Martín González, Angel1
- Maryland Geological Survey16
- Maryland Power Plant Research Program6
- Maryland. Energy Administration4
- Maryland. Tidewater Administration5
- Massachusetts. Department of Environmental Management2
- Masterson, John P.1
- Maupin, Molly A.2
- Maurer, Douglas K.1
- McClure, Cynthia Rowland1
- McCombs, Gregory K.1
- McCormack, H. F.1