GENETIC VARIATION AND POPULATION STRUCTURE IN CENTRAL AND ISOLATED POPULATIONS OF BALSAM FIR, ABIES BALSAMEA (PINACEAE).Published in:American Journal of Botany, 2002, v. 89, n. 5, p. 783, doi. 10.3732/ajb.89.5.783By:Shea, Kathleen L.;Furnier, Glenn R.Publication type:Article