TY  - BOOK
AU  - Billings,Evelyn
AU  - Westmore,Ann
TI  - The Billings method: controlling fertility without drugs or devices
PY  - 1980///
CY  - New York
PB  - Random House
KW  - Natural family planning
KW  - Ovulation method
KW  - Local
N1  - Includes index; Bibliography: p. [230]-237
ER  -