TY - Generic T1 - Dendrochronology and Studies in Cyclics T2 - University of Pennsylvania Bicentennial Conference Y1 - 0 A1 - Douglass, A.E. KW - climatology KW - conference KW - cyclics KW - dendrochronology KW - Douglass KW - environment KW - historic KW - university of Pennsylvania JF - University of Pennsylvania Bicentennial Conference N1 - This title is available through the Tree Ring Laboratory; please contact the lab for more information. ER -