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by:
Tarkka, Pekka
(1934- )
In: Punalippu. - ISSN 0206-4235. - Petroskoi. - 24(1967) : 3, s. 92-95
Journal article
In: Punalippu. - ISSN 0206-4235. - Petroskoi. - 24(1967) : 3, s. 92-95
Journal article