Scientific & Technical Information Office, National Aeronautics and Space Administration : for sale by the Supt. of Docs., U.S. Govt. Print. Off.1977.<NC161-151>
edited by Lee B. Summerlin ; prepared by George C. Marshall Space Flight CenterScientific & Technical Information Office, National Aeronautics and Space Administration : for sale by the Supt. of Docs., U.S. Govt. Print. Off.1977