> Verlagsreihe
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257:
Communities of networked expertise professional and educational perspectives Kai Hakkarainen
Amsterdam; [u.a.]: Elsevier, 2004
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205:
World forests, society, and environment ed. by Matti Palo
Dordrecht [u.a.]: Kluwer, 1999
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112:
The dynamics of boreal coniferous forests Kullervo Kuusela
Helsinki: SITRA, 1990