Natural family planning :a guide to provision of services 

 - Geneva :  World Health Organization ;  1988. 
 - vi, 82pg. :  ill. ; 
<br/><br/><label>ISBN: </label>9241542411 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Natural family planning.
<br/><br/><label>LC Class. No.: </label>MED RA440.55  / N3