00000cam a22000004a 4500 UP-99796217604551845 Buklod 20230503092542.0 ta r ||| u ta 080210s1986 xx r |000 u|eng d (iLib)UPD-00000269555 eng DMLUC RG 136.5 L35 Laing, John E. Periodic abstinence in the Philippines new findings from a national survey John E. Laing. Bangkok The Population Council 1986. 31 p. Sexual abstinence Philippines. Natural family planning Calendar method. Natural family planning Philippines. Book FI Paper UPD DECON HQ 766.5 P5 L345 UPD DMLF RG 136.5 L35 in stacks Book