TY  - BOOK
AU  - Billings,Evelyn L.
TI  - Atlas of the ovulation method: the safe period based on the mucus sympton
U1  - 612.62 
PY  - 0000///[19-?]
CY  - Allahabad
PB  - Better Yourself Books
KW  - Ovulation
KW  - Menstrual cycle
KW  - Ovaries
ER  -