Assault on the unknown; the International Geophysical Year
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The International Geophysical Year: International Conciliation, No. 521, January, 1959
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Igy: Year of Discovery; the Story of the International Geophysical Year
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Deep Freeze: The United States, the International Geophysical Year, and the Origins of Antarctica's Age of Science
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The political legacy of the International Geophysical Year
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Once Round The Sun The Story Of The International Geophysical Year
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1958 4 X 3¢ International Geophysical Year Postage Stamp Scott #1107
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Partners in science ;: The story of the International Geophysical Year
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Single 1958 3 Cents US Postage Stamp, S# 1107, International Geophysical Year, Hands from Michelangelo's Creation
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International Geophysical Year 50th Anniversary
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