00975nam a2200289Ia 4500 8047 BIBL 20160527202738.0 910619s1981 mx af 00010 spa d cn 91006192 CaOONL fre CaOONL spa freeng EVLR R 613.943 B598o7 E c1 RG136.5 RG136 .5 B5414 613.9/434 19 R 613.943 B598o7 E Billings, John J. 202115 Local Método de la ovulación planifiación natural de la familia J.J. Billings ; traducción de Mercedes Arzú de Wilson. 7.ed. México Ediciones Paulina 1981. 35 p. ill. (some col.) Translation of : The ovolution method. Conception Prevention. 79224 Local Natural family planning. Ovulation method. 141541 Local Birth control Popular works. 62599 Local 6817 6817 0 0 0 613_943000000000000_B598O7_E 0 evref 353371 10 10 9 2016-05-27 11615 0 613.943 B598o7 E 80000001424822 2016-05-27 00:00:00 r:8047 z:NCC:D 9