000			00469nam a22001337a 4500
005			20240105055928.0
008			240105b |||||||| |||| 00| 0 eng d
082			_a241.64 _bBIL
100			_aBillings, John J.
245			_aThe Ovulation Method : _bThe avoidance of pregnancy in medical practice, by a technique which is safe, reliable and morally acceptable / _cJohn J. Billings.
260			_aMelbourne : _bThe Advocate Press, _c1967.
300			_a95 p.
942			_cL
999			_c4549 _d4549