Statistics 16 Economics 13 Dispersion 12 Congresses 11 History 11 Chemistry 9 Chemistry, Organic 9 Chemistry, Physical and theoretical 9 Geometry 9 Philosophy 9 Chemistry, Inorganic 8 Physics 8 probability 8 English language 7 Mathematics 7 Probability 7 dispersion 7 Chemistry, Analytic 6 Mathematics, Greek 6 Seed dispersal 6 Social sciences 6 Study and teaching 6 Calculus 5 Dispersal 5 Ecology 5 Language and languages 5 Logic 5 Variation 5 Biochemistry 4 Correlation 4