1: 108–140. Cite journal Last name Allen First name Joel Asaph Year of publication 1877 Title The influence of Physical conditions in the genesis of species URL http://people.wku.edu/charles.smith/biogeog/ALLE1877.htm Journal Radical Review Volume 1 Pages 108–140 ↑ Lopez, Barry Holstun (1986). Arctic Dreams: Imagination and Desire in a Northern Landscape.