Forestry 207 Forest management 181 Forest ecology 94 Forest policy 71 Library classification schemes 63 Forests 62 Decimal Classification 61 Forests and forestry 58 Ecology 51 Forests and Forest Trees (Biology and Ecology) 44 History 43 Forest 39 Biodiversity 36 Natural resources 32 Forest conservation 28 India 26 Silviculture 26 Agroforestry 25 Botany 24 Plants 24 Silviculture and Forest Management 24 Forest resources 21 Agriculture 20 Environment 20 Human ecology 20 Trees 20 Working Plan 19 Economics 18 Sustainability 18 Deforestation 17