Template:Ref-Howell1890a
From Embryology
Howell WH. The life history of the formed elements of the blood, especially the red blood corpuscles . (1890) J Morphol. 4: 57-116.
Howell WH. The life history of the formed elements of the blood, especially the red blood corpuscles . (1890) J Morphol. 4: 57-116.