Natural family planning
Subtitle: the ovulation method
By: by John J. Billings.
Edition: 2nd American ed.
Publisher: Liturgical Press
Published: 1973
Place of publication: Collegeville, Minn
Language: eng
Number of pages: 38
Subjects: Contraception.; Natural family planning.; Birth control -- Handbooks, manuals, etc.
Genres: Handbooks, manuals, etc.
Other titles: Ovulation method
Notes: First published as The ovulation method.

Bibliography: p. 37.