Atlas of the ovulation method
Subtitle: the mucus patterns of fertility and infertility
By: by Evelyn L. Billings, John J. Billings and Maurice Catarinich.
Contributors: Billings, John.; Catarinich, Maurice.
Edition: 4th ed.
Publisher: Advocate Press
Published: 1980
Place of publication: Melbourne
Language: eng
Number of pages: 87
Notes: Previous ed., 1977.