History 52 Mathematics 39 Literature 32 Tata Institute of Fundamental Research 31 History and criticism 27 Common weeds 22 Pests 22 Safety measures 22 Women 21 English literature 20 Mathematical analysis 20 Functional analysis 19 Poetry 18 Probabilities 18 Calculus 17 Journal, American Folklore 17 Religion 17 Criticism 16 Plantation crops 16 Tea 16 American poetry 15 Data processing 15 Philosophy 15 Education 14 Feminism 14 Mathematical models 14 Political science 14 Mathematical statistics 13 Differential equations 12 Number theory 12