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Great soviet encyclopedia (1969–1978)

3rd edition of the Great Soviet Encyclopedia

Pronunciation
/ɡreɪt ˈsoʊviət ɛnˌsaɪkləˈpidiə ( 1969 – 1978 )/
/ɡreɪt ˈsɒvɪət ɪnˌsʌɪkləʊˈpiːdɪə ( 1969 – 1978 )/