000 00316nam a2200121Ia 4500
100 _aWilson, Mercedes Arzu
020 _a0-442-29515-4
942 _cBK
245 _aThe ovulation method of birth regulation
260 _aVan Nostrand Reinhold Company, New York
_c1980
082 _a613.943 Wil
300 _axxii, 201p
999 _c21306
_d21306