Journal Article 715 Methode 347 Research Support, Non-U.S. Gov't 170 Geschichtswissenschaft 151 History 132 Family Planning 115 Contraception 114 mehr ... Wissenschaft 109 Contraceptive Methods 100 Geschichte 91 Historiography 89 Deutschland 77 Barrier Methods 68 Developing Countries 67 Geschichtsschreibung 64 Developed Countries 61 Review 53 Condom 52 Methodology 51 Diseases 49 Economic Factors 48 Americas 47 Contraceptives, Oral 45 Oral Contraceptives 42 Theorie 42 Programs 41 Behavior 40 Organization And Administration 40 Asia 38 North America 38 weniger ...