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Washington, D.C. :; Washington, D.C. :; Washington, D.C. :; Washington, D.C. : National Aeronautics and Space Administration, Scientific and Technical Information Office,; National Aeronautics and Space Administration, Scientific and Technical Information Branch; National Aeronautics and Space Administration, Scientific and Technical Information Division; National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Program 1979
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