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No direct measurements?

A different result from a different proxy:

Kouwenberg, L, Wagner, R, Kurschner, W and Visscher H, 2005. Atmospheric CO2 fluctuations during the last millenium reconstructed by stomatal frequency analysis of Tsuga heterophylla needles, Geology, 33: 33-36.


by Luis de Sousa (luis[dot]de[dot]sousa[at]protonmail[dot]ch) on Mon Jan 28th, 2008 at 10:54:27 AM EST
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