TY  - BOOK
AU  - Billings,Evelyn
TI  - The Billings method
SN  - 9715044506
U1  - 613.9 B598 1980 
PY  - 1980///
CY  - Makati City
PB  - St. Paul Publications
KW  - Birth control
N1  - Includes index
ER  -