611.013
C280
v. 21 
Gregory , Paul Wallace , 1898-
... The early embryology of the rabbit (by) 
P. W. Gregory ... with two plates and three text figures .
( In  Carnegie institutions of Washington .
Contributions to embryology . Washington . 
Constributions  to embryology . Washington , 1930.
29 x 23 cm. vol. XXI , p. p. 141- 168 , 1 1. ilus. , 2 pl.) 
Contributions to embryology , no. 125. 
Bibliography : p. 168.