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3-pyridine carbonic acid
1
Baltic Sea
1
Geopark
1
Starunia area
1
butanedioic acid
1
food products
1
hairy rhino
1
ice days
1
ice extent
1
mammoth
1
natural-human-made geosystems
1
organic acids
1
paleoclimate
1
pteroylglutamic acid
1
severity characteristics
1
severity of ice seasons
1
tundra
1
upper Pleistocene
1
winter navigation
1
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