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An improved model of the earth's gravitational field [microform] : GEM-T1 / J.G. Marsh ... [et al.]
Bib ID 4029131
Format MicroformMicroform, BookBook
Description [Greenbelt, Md.?] : National Aeronautics and Space Administration, Goddard Space Flight Center ; [Springfield, Va. : For sale by the National Technical Information Service], 1987 
1 v. 
Series

NASA technical memorandum ; 4019.

Notes

Distributed to depository libraries in microfiche.

Reproduction Microfiche. [Washington, D.C.? : National Aeronautics and Space Administration], 1987. 4 microfiches. 
Subjects Gravitational fields.
Other authors/contributors Marsh, J. G  |  Goddard Space Flight Center
Govt. Doc. Number NAS 1.15:4019 

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