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Viitteet 51-55 / 55
Finland's Natural Resources and the Environment 1998
(Ministry of the environment,Statistics Finland, 1998)
Naturresurserna och miljön 2000
(Miljöministeriet,Statistikcentralen, 2000)
Luonnonvarat ja ympäristö 1997
(Ympäristöministeriö :Tilastokeskus, 1997)
Finland's Natural Resources and the Environment 2000
(Ministry of the Environment,Statistics Finland, 2000)
Finland's Natural Resources and the Environment : Appendix 3 of the Government proposal for the 1995 budget
(Statistics Finland, 1995)