Author:

Beerling,D.J.

Year:

2002

Title:

Low atmospheric CO2 levels during the Permo - Carboniferous glaciation inferred from fossil lycopsids.

Reference:

Beerling,D.J. (2002) Low atmospheric CO2 levels during the Permo - Carboniferous glaciation inferred from fossil lycopsids. National Academy of Sciences, Washington, Proceedings Vol. 99 # 20 P. 12567-12571

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