Template:Ref-Hartman1916
From Embryology
Hartman CG. Studies in the development of the opossum Didclphys virginiana L. I. History of the early cleavage. II. Formation of the blastocyst. (1916) J Morphol. 27: 1-84.
Hartman CG. Studies in the development of the opossum Didclphys virginiana L. I. History of the early cleavage. II. Formation of the blastocyst. (1916) J Morphol. 27: 1-84.