"safe period" as a birth control measure
Subtitle: a study and evaluation of available data
By: by Robert L. Dickinson.
Contributors: American Committee on Maternal Welfare.
Publisher: Committee on Maternal Health
Published: 1927
Place of publication: New York City
Language: eng
Number of pages: 12
Subjects: Natural family planning -- Calendar method.
Notes: A report from the Committee on Maternal Health.