by Helen T. Wells, Susan H. Whiteley, and Carrie E. Karegeannes.
Wells, Helen T.Publication & Distribution:
Washington . Scientific and Technical Information Office, National Aeronautics and Space Administration : for sale by the Supt. of Docs., U.S. Govt. Print. Off., (c)1976.Author:
Whiteley, Susan H., joint author.Author:
Karegeannes, Carrie E., joint author.