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, 1977
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, 1977
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, 1983