Template:Ref-McWhorterWhipple1912
From Embryology
McWhorter JE. and Whipple AO. The development of the blastoderm of the chick in vitro. (1912) Anat. Rec. 8(3): 121-
McWhorter JE. and Whipple AO. The development of the blastoderm of the chick in vitro. (1912) Anat. Rec. 8(3): 121-