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1Llibreper Swithinbank, Charles“…National Science Foundation (U.S.). Division of Polar Programs…”
Publicat 1989
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2Actes de congresos LlibrePublicat 1983“…National Science Foundation (U.S.). Division of Polar Programs…”
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3Document de govern Revista“…National Science Foundation (U.S.). Division of Polar Programs…”
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