History 19 Literature 19 Forestry 12 Biodiversity-Kerala 9 Forests 9 Forests and Forest Trees (Biology and Ecology) 9 Afro-Americans 8 Forest ecology 8 Literature Hindi 8 Forests and forestry 7 Criticism and interpretation 6 English drama 6 Forest management 6 History and criticism 6 IUFRO 6 Statistics 6 United States 6 American literature 5 Biodiversity 5 Biography 5 Economics 5 Forest policy 5 Political aspects 5 Research 5 Agroforestry 4 Biology 4 Conservation 4 Criticism 4 English literature 4 Forestry Economics, (New March 2000) 4