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A diagnostic system for studying energy partitioning and assessing the response of the ionosphere during HAARP modification experiments [microform] : final report, contract NAS8-39238 : report date, 15 May 1996 : period of performance, 30 September 1991 through 31 December 1993 / Frank T. Djuth, John H. Elder, Kenneth L. Williams.
- Text
- [Washington, DC : National Aeronautics and Space Administration ; Springfield, Va. : National Technical Information Service, distributor, 1997]
- 1997
Investigation of radio wave propagation in the Martian ionosphere utilizing HF sounding techniques [microform] : thesis ... / Robert J. Yowell.
- Text
- [Washington, D.C. : National Aeronautics and Space Administration ; Springfield, Va. : National Technical Information Service, distributor, 1996]
- 1996
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