Europe in Space: Apr./May 1996, p. 62.

Reaction Motors, Inc.: Dec. 1988/Jan. 1989, p. 76.

American Heritage

Consequences of World War I: July-Aug. 1992, p. 80.

American Institute of Aeronautics and Astronautics

Space shuttle: AIAA Paper 71-804, 71-805, 73-60, 73-62, 73-604, 73-606.

Astronautics & Aeronautics (after 1983: Aerospace America)

Europe in space: Apr. 1978, p. 12; Mar. 1980, p. 16; July 1994, p. 4.

Future plans in space: Jan. 1970, pp. 30, 62.

Global Positioning System: Aug. 1995, pp. 4, 18.

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