Lunar ephemeris and selenographic coordinates of the earth and sun for 1971 and 1972.
APA Citation
Hartung, A. D., United States. National Aeronautics and Space Administration. Lunar ephemeris and selenographic coordinates of the earth and sun for 1971 and 1972. Washington: Scientific and Technical Information Office, National Aeronautics and Space Administration.
MLA Citation
Hartung, Ann D, and United States. National Aeronautics and Space Administration. Lunar Ephemeris And Selenographic Coordinates of the Earth And Sun for 1971 And 1972. Washington: Scientific and Technical Information Office, National Aeronautics and Space Administration,
Warning: These citations may not always be complete (especially for serials).