Forestry 207 Forest management 181 Forest ecology 94 Forest policy 71 Library classification schemes 63 Forests 62 Decimal Classification 61 Forests and forestry 58 History 51 Ecology 47 Forests and Forest Trees (Biology and Ecology) 44 Forest 39 Biodiversity 33 Natural resources 32 Arts 31 India 29 Forest conservation 28 Algebraic number theory-- Invariant theory-- P-adic numbers-- Quadratic forms-- Algebraic function 27 Silviculture 26 Agroforestry 25 Botany 24 Economics 24 Silviculture and Forest Management 24 Agriculture 22 Environment 22 Forest resources 21 Human ecology 20 Plants 20 Research 20 Trees 20