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  1. 1

    Magnetic earth ionosphere resonant frequencies, NAG-5-1267 : [progress report]

    [Institute, W.Va.] : [Washington, DC] : [Springfield, Va.] : West Virginia State College, Community College Division ; [National Aeronautics and Space Administration] ; [National Technical Information Service, distributor], 1994
    Format: Government Document Book


  2. 2

    Investigation of EM emissions by the electrodynamic tether, inclusive of an observational program (E.M.E.T), contract NAS8-36809 : final report by Estes, Robert D.

    Cambridge, Mass. : [Washington, DC] : [Springfield, Va.] : Smithsonian Institution, Astrophysical Observatory ; [National Aeronautics and Space Administration] ; [National Technical Information Service, distributor], 1998
    Format: Government Document Book


  3. 3

    System engineering study of electrodynamic tether as a spaceborne generator and radiator of electromagnetic waves in the ULF/ELF frequency band : semiannual report #1, for the peri... by Estes, Robert D.

    Cambridge, Mass. : [Washington DC] : [Springfield, Va.] : Smithsonian Institution, Astrophysical Observatory ; [National Aeronautics and Space Administration] ; [National Technical Information Center, distributor], 1986
    Format: Government Document Book