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In this work the eminent Dutch physician offers for the intelligent layman as well as for doctors, psychologists, teachers and social workers a guide to the causes and effects of fertility and sterility. This book is the third and last volume in Dr Theodoor Hendrik van de Velde's trilogy on the problems of marriage and this book completes his internationally authoritative work on eugenics and volitional sex behavior. Following his other book Ideal Marriage and Sexual Tensions in Marriage, this book considers such problems as sexual abstinence and excess, family limitation, the...