ISBN-13: 9781475262308 / Angielski / Miękka / 2012 / 106 str.
This book, originally written in 1968, deals with some of the basic problems involved in the controversy then in progress in reference to "Humanae Vitae," the encyclical of Pope Paul VI. It looks not only at the moral question of contraception, but deals also with the theological foundations of teaching authority in the Church.