Science History 375 Philosophy 333 Technology 311 Study and teaching 187 Social aspects 156 Periodicals 153 Study and teaching (Primary) 131 Congresses 109 Methodology 106 Mathematics 105 Research 94 Study and teaching (Secondary) 79 Bibliography 76 Engineering 66 Physics 62 Science and state 59 Dictionaries 45 Information services 44 Scientists 41 Natural history 40 Societies, etc 39 Data processing 38 Medicine 36 Education 34 Study and teaching (Higher) 34 Biology 29 International cooperation 28 Experiments 27 Science and civilization 24