WordNet: "varmat päivät", rytmiehkäisymenetelmä, rytmimenetelmä

Sanatista
natural family planning in which ovulation is assumed to occur 14 days before the onset of a period (the fertile period would be assumed to extend from day 10 through day 18 of her cycle)



"varmat päivät"


rytmiehkäisymenetelmä


rytmimenetelmä