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by:
Salin, Petri
In: Portti. - ISSN 0359-114X. - 9(1990) : 3, s. 59-63
Portti. - ISSN 0359-114X. - 9(1990) : 3, s.59-63
Journal article
In: Portti. - ISSN 0359-114X. - 9(1990) : 3, s. 59-63
Portti. - ISSN 0359-114X. - 9(1990) : 3, s.59-63
Journal article