A Description of colored gravity and terrain maps for the United States and adjacent Canada east of 104
By: by R.W. Simpson ... [et al.] ; United States Department of the Interior, Geological Survey.
Contributors: Simpson, Robert W.; Geological Survey (U.S.)
Series: Open-file report -- 82-877.; Open-file report (Geological Survey (U.S.)) -- 82-877.
Publisher: The Survey
Published: 1982
Place of publication: [Reston, Va.?]
Language: eng
Format: Microform
Subjects: Gravity -- United States.; Gravity -- Canada.
Notes: Microfiche. [Denver, Colo. : U.S. Geological Survey, 1982?]. 1 microfiche ; 11 x 15 cm.

Bibliography: p. 11.