Template:Ref-Hartman1920
From Embryology
Hartman CG. Studies in the development of the opossum Didelphys virginia L. V. The phenomena of parturition. (1920) Anat. Rec. 19(5): 251-262.
Hartman CG. Studies in the development of the opossum Didelphys virginia L. V. The phenomena of parturition. (1920) Anat. Rec. 19(5): 251-262.