Humanae Vitae: the fecundity of a Letter from the future
International Conference on the 50th anniversary of the Humanae Vitae. Centro Pastorale Pablo VI, Brescia, 16th to 18th June, 2018 Esperanza Coll and Montserrat Rutllant, members of RENAFER (Spanish Association of Teachers in Natural Family Planning) (*). Following the thrust of the words of Humanae