@article {3448, title = {Adaptation and Dimorphism in Eastern Hemlock, Tsuga Canadensis (L.) Carr.}, journal = {The American Naturalist}, volume = {113}, year = {1979}, month = {March}, pages = {333-350}, keywords = {Climate, Ecosystem, Hemlocks, Topography, Trees -- Growth}, author = {Kessell, Stephen R} }