00988nam a2200181Ia 4500001000700000003000500007005001700012008004100029100003500070245023200105260006300337300002600400500022400426504003100650650003200681650006800713650002500781109189BIBL20160527182716.0930301s1983||||miua   ||b   ||0|1||eng|d10aBrennan, Joseph William2Local12aA study of marital interactional rolesbmethod effectiveness and satisfaction levels of couples who are using the Billings Ovulation Method of natural family planning in Southern and Western Puerto RicocRev. Joseph W. Brennan.0 aAnn Arbor, MI.bUniversity Microfilms Internationalc1983.  aviii, 154 p.btables.  aAuthorized facsimile, made from the microfilm master copy of the original dissertation submitted to the Catholic University of America in partial fullfillment of the requirements for the degree Doctorate in Social Work.  aBibliography : p. 122-137. 0aFamilyzPuerto Rico.2Local 0aNatural family planning.zPuerto RicoxOvulation method.2Local 0aBirth control2Local