Great Soviet Encyclopedia. Volume 65, 1931 (Q43200476)
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Current Data About Great Soviet Encyclopedia. Volume 65, 1931
(P31) (Q3331189)

(P361) (Q20078554)
(P155)
(P156)

(P407) (Q7737)

(P478) 65

(P577) Thursday, January 1, 1931

(P1476) "Эфемериды — Яя" (language: ru)

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