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Questar advertisement, <em>Scientific American</em>, September 1960 — Questar advertisement, *Scientific American*, September 1960. Questar Corporation

Scientific American, September 1960, 260.
Scientific American, October 1960, 194.
Scientific American, November 1960, 208.
Scientific American, December 1960, 99.

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Questar advertisement, <em>Scientific American</em>, December 1961 — Questar advertisement, *Scientific American*, December 1961. Questar Corporation

Scientific American, December 1961, 129.
Scientific American, February 1963, 89.
Analog Science Fact/Science Fiction (Analog Science Fiction and Fact), June 1963, 5.