History 79 Heritage tourism 55 India 43 Criticism 42 Criticism and interpretation 41 Variation 39 Genetics 38 Heritage 38 Calculus of variations 36 Culture 36 Civilization 33 Tourism 32 Cultural property 31 History and criticism 26 Agronomy 25 English literature 22 Mathematics 22 Hinduism 21 Plant Breeding and Genetics 21 Plant Biotechnology 20 Religion 20 Cultural heritage 19 Cultural tourism--Heritage tourism 19 Economics 19 GENETICS : A Periodical Record Of Investigations Bearing On Heredity And Variation 19 Interpretation 19 Literature 19 Poetry 19 Philosophy 18 Arts 17