Proceedings

Manylion Llyfryddiaeth
Prif Awdur:	Research Conference on Natural Family Planning, Warrenton, Virginia 1972.
Awduron Eraill:	Urichie, William A., Natural family planning
Fformat:	Llyfr
Iaith:	English
Cyhoeddwyd:	Washington, D. C. Human Life Foundations c1973
Pynciau:	Birth control > Congresses. Rhythm method (Birth control) > Congresses.