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Arctic ocean hydrographic expedition

1910s Russian sea expedion

Pronunciation

/ˈɑːktɪk ˈəʊʃən hʌɪdrəˈɡrafɪk ɛkspɪˈdɪʃən/

/ˈɑrdɪk ˈoʊʃən ˌhaɪdrəˈɡræfɪk ˌɛkspəˈdɪʃən/

Categories

research expedition