TY  - GEN
AU  - Schrage,R
TI  - [A pregnancy calendar as a computer program]
SN  - 0013-5585
PY  - 1990///0109
KW  - Embryonic and Fetal Development
KW  - Female
KW  - Gestational Age
KW  - Humans
KW  - Pregnancy
KW  - physiology
KW  - Software
N1  - Publication Type: Journal Article
ER  -