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by: Björkenheim, Magnus

In: Parnasso. - ISSN 0031-2320. - Helsinki. - 1 (1951), s. 117-123
Journal article
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by: Marjanen, Kaarlo.

In: Parnasso. - ISSN 0031-2320. - Helsinki. - 3 (1953), s. 350-354
Journal article
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