Lunar impact : a history of Project Ranger / R. Cargill Hall
Published
Washington : Scientific and Technical Information Office, National Aeronautics and Space Administration : [for sale by the Supt. of Docs., U.S. Govt. Print. Off.], 1977
Also available via Internet from the NASA History Office web site. Address as of 6/6/06: http://history.nasa.gov/SP-4210/pages/Cover.htm; current access is available via PURL