research, pre-1945: 6, pp. 91. 185, 247, 269, 287; 7-II. pp. 43, 79, 99; 8. pp. 67, 103; 9, p. 63; 12, p. 31.

research, post-1945: 9, p. 89; 10, p. 115; 14, p. 151.

solid propellants: 7-II, p. 59.

sounding: 7-II, p. 65; 8, p. 263; 9, pp. 191, 231.

Space stations: 14, p. 79; 17, p. 203.

Sputniks: 8, p. 207; 10, p. 159.

Tikhonravov, Mikhail: 8, p. 343; 17, p. 451.

Truax, Robert: 6, p. 295; 12, p. 57.

U.S. presidents: 3, p. 5.

Viking (1946-1954): 7-II, p. 429.

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