000 00454nam a2200145Ia 4500
008 200309s9999 xx 000 0 und d
041 0 _aeng
060 0 4 _aWP630
_bB589B 1982
100 0 _aBillings Evelyn.
245 1 4 _aThe Billings Method :
_bControlling fertility Withour Drugs of Devices
250 _a1st ed.
260 _aAustralia
_bAnne O Ponovan pty
_c1982
300 _a254 p.
650 4 _aCONTRACEPTION / OVULUTION - DETECTION
999 _c24736
_d24736