Physical description for original version: iii, 36 p. : 28 cm
書誌注記
Includes bibliographical references (p. 35-36)
原資料等に関する注記
原資料の出版事項: Washington, DC : National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Division : For sale by the Supt. of Docs., U.S. G.P.O., 1989