Telescopes
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1957 Sc 1937-1939 International Geophysical Year Scott 1957-1959
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1962 Sc 2606 BL32II Soviet Scientific Drifting Station “North Pole” Scott 1767a
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1964 Sc 2884-2886. International year of the quiet Sun. Scott 2839-2841
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1987 Sc 5826-5828 Science in USSR Scott 5617-5619
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