Scientific and Technical Information Office, National Aeronautics and Space Administration; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.]1973.<MB45-29>
edited by S. D. Jordan and E. H. Avrett ; prepared by Goddard Space Flight CenterScientific and Technical Information Office, National Aeronautics and Space Administration; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.]1973