21. On the effect of impacts and strains on the feet of Mammalia Author(s): Cope, E. D. (Edward Drinker), 1840-1897, author Publication: [Philadelphia?] : [publisher not identified], [1881?] Subject(s): Foot BonesMammalsBiomechanical Phenomena
22. The geographic distribution of life in North America with special reference to the mammalia Author(s): Merriam, C. Hart (Clinton Hart), 1855-1942, author Publication: Washington : Biological Society of Washington, [1892?] Subject(s): Animal DistributionMammalsNorth America