Template:Ref-Hartman1928
From Embryology
Hartman CG. The breeding season of the opossum (didelphis virginiana) and the rate of intrauterine and postnatal development. (1928) J Morphol. 45(1): 143-214.
Hartman CG. The breeding season of the opossum (didelphis virginiana) and the rate of intrauterine and postnatal development. (1928) J Morphol. 45(1): 143-214.