The ovulation method
Subtitle: the achievement or avoidance of pregnancy by a technique which is safe, reliable and universally acceptable
By: John J. Billings
Edition: 7th ed.
Publisher: Advocate Press Pty. Ltd.
Published: 1983
Place of publication: Melbourne
Language: eng
Number of pages: 136
Subjects: Cervix Mucus; Contraception; Methods; Menstruation; Ovulation Detection; Natural Family Planning Methods
Notes: "With an appendix on Correlations between the mucus symptoms and the hormonal markers of fertility throughout reproductive life by J.B. Brown ... [et al.].

Envelope containing blank chart and stamps for personal record inside back cover.

Includes index.

Bibliography: p. 92-98.