History 71 Philosophy 53 Biotechnology 36 Hormones 32 India 32 Physiology 32 Women 30 Medicinal plants 28 Social conditions 24 Economics 23 History and criticism 21 Microbiology 21 Education 20 Feminism 20 Political aspects 20 Politics and government 20 Criticism and interpretation 19 India-economic development and growth-- Economic planning-- Production economics 19 Hormone Research 18 Mathematics 16 Plant physiology 16 Historiography 15 Recent progress in medicinal plants -- Indexes--- Medicinal plants -- Research -- Indexes-- Materia medica, Vegetable -- Research -- Indexes 15 Social aspects 15 Sociology 15 Economic conditions 14 Management 14 Nutrition 14 Political science 14 Feminist theory 13