Greenbelt, Md. : National Space Science Data Center (NSSDC) / World Data Center a for Rockets and Satellites (WDC-A-R&S), National Aeronautics and Space Administration, Goddard Space Flight Cente, 1979
Washington : Scientific and Technical Information Branch, and Division of Public Affairs, National Aeronautics and Space Administration : for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1979
Washington, D.C. : National Aeronautics and Space Administration, Scientific and Technical Information Office , Springfield, Va. : For sale by the National Technical Information Services, 1979