@article {3633, title = {Phenotypic Variation in Abies Balsamea in Response to Altitudinal and Geographic Gradients}, journal = {Ecology}, volume = {44}, year = {1963}, month = {summer}, pages = {429-436}, keywords = {Ecosystem, Geography, Trees -- Classification and description, Trees -- Growth}, author = {Myers, Oval and Bormann, F H} }