@misc{indiciaeacf21a128513, title = {The genetic and endocrinic basis for differences in form and behavior : as elucidated by studies of contrasted pure-line dog breeds and their hybrids — Illustration, Page 160}, year = {1941}, url = {https://www.biodiversitylibrary.org/page/5864605}, note = {Source identifier: page-5864605} }