National Aeronautics and Space Administration, Scientific and Technical Information Branch, For sale by the National Technical Information Service], 1982
U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology, For sale by the Supt. of Docs., U.S. G.P.O., 2000
[microform] /
National Aeronautics and Space Administration, Scientific and Technical Information Branch, For sale by the National Technical Information Service], 1982