1. Map showing echo-sounding survey (3.5 kHz) of Massachusetts and Cape Cod Bays, western Gulf of Maine
1972. 2012-11-16T19:43:26Z. 2012-11-16T19:43:26Z. Tucholke, Brian E. Dept. of the Interior, U.S. Geological Survey. English. Public. Massachusetts, Massachusetts Bay, Cape Cod Bay, Maine, Gulf of, Atlantic Coast (New England), New England, Massachusetts Bay (Mass.), and Cape Cod Bay (Mass.).
