Brennan, Joseph William <br/><br/>
A study of marital interactional roles  method effectiveness and satisfaction levels of couples who are using the Billings Ovulation Method of natural family planning in Southern and Western Puerto Rico 
Rev. Joseph W. Brennan. 
 - Ann Arbor, MI.  University Microfilms International  1983. 
 - viii, 154 p.  tables. 
<br/><br/> Authorized 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. 
<br/><br/>Bibliography : p. 122-137. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Family--Puerto Rico.<br/>Natural family planning.--Ovulation method.--Puerto Rico<br/>Birth control