%0 Article %T Detecting long-term changes in point-source fossil CO2 emissions with tree ring archives %A Turnbull, Jocelyn C.; Norris, Margaret W.; Keller, Elizabeth D. %8 2019-12-06 %R http://localhost/files/5d86p092t %G http://id.loc.gov/vocabulary/iso639-2/eng %[ 2020-02-17 %9 Article %~ CU Scholar %W CU Boulder