Forestry 423 Forest management 181 Forest ecology 94 Forest policy 71 Library classification schemes 63 Forests 62 Decimal Classification 61 Forests and forestry 58 Ecology 53 Agriculture 47 Forests and Forest Trees (Biology and Ecology) 44 Agroforestry 39 Forest 39 History 38 Natural resources 36 Biodiversity 34 Silviculture 33 Forest conservation 28 India 27 Trees 26 Botany 25 Environment 24 Plants 24 Silviculture and Forest Management 24 forestry 22 Economics 21 Forest resources 21 Human ecology 20 Deforestation 19 Working Plan 19