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by: Petäjä, Jukka

In: Helsingin sanomat. - ISSN 0355-2047. - 2013-01-31, s.C13
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by: Petäjä, Jukka

In: Helsingin sanomat. - ISSN 0355-2047. - 2013-11-19, s.B10
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by: Petäjä, Jukka

In: Helsingin sanomat. - ISSN 0355-2047. - 2014-01-26, s.C14-C15
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by: Petäjä, Jukka

In: Helsingin sanomat. - ISSN 0355-2047. - 2014-03-01, s.C14-C15
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by: Petäjä, Jukka

In: Helsingin sanomat. - ISSN 0355-2047. - 2014-08-02, s.C4
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