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Response strategies of boreal spruce trees to anthropogenic changes in air quality and rising pCO2; Savard, M M; Bégin, C;
Marion, J. Environmental Pollution vol. 261, 114209, 2020 p. 1-10,
https://doi.org/10.1016/j.envpol.2020.114209 
Open Access
(NRCan Cont.# 20190296)