Billings, Evelyn <br/><br/>
The Billings method: controllings fertility without drugs or devices 

 - Australia  Anne O'Donovan  1980 
 - 254 p. 
<br/><br/><label>ISBN: </label>908476043 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Natural family planning
<br/><br/><label>Dewey Class. No.: </label>613.9434  / BIL