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1
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International Meeting on the Biological Productivity of Tundra (4th : 1971 : Saint Petersburg, Russi / https://id.loc.gov/authorities/names/n83123683
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1972
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1
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2
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International Meeting on the Biological Productivity of Tundra (5th : 1974 : Abisko, Sweden) / https://id.loc.gov/authorities/names/n83123683
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1975
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1
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