Não informado. (1958). IGY satellite report series. International Geophysical Year.
Lua i Stíl Chicago (17ú heag.)Não informado. IGY Satellite Report Series. Washington: International Geophysical Year, 1958.
Lua MLA (8ú heag.)Não informado. IGY Satellite Report Series. International Geophysical Year, 1958.
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