TY  - BOOK
TI  - Biology of gestation
U1  - 612.63 ASS.2 
PY  - 1968///.
CY  - New York : 
PB  - Academic Press, 
KW  - Gestation-Biology
KW  - Pregnancy
N1  - Includes index.; 2 v. : The fetus and neonate
ER  -