The Billings method
By: Evelyn Billings and Ann Westmore.
Contributors: Westmore, Ann.
Publisher: Penguin
Published: 1982
Place of publication: Harmondsworth
Language: eng
Number of pages: 230
Subjects: Natural family planning -- Ovulation method.
Notes: Originally published, Carlton, Vic. , Anne O'Donovan, 1980 ; London , Allen Lane, 1981.

Includes index.