Physical description for original version: xxiii, 427 p. : 25 cm
書誌注記
Includes bibliographical references and index
原資料等に関する注記
原資料の出版事項: Washington, D.C. : National Aeronautics and Space Administration, NASA Office of Policy and Plans, NASA History Office : For sale by the U.S. G.P.O., Supt. of Docs., 1998