Timber 175 Wood 21 Lumber trade 14 Periodicals 13 Forest products industry 12 Identification 12 Forests and forestry 11 espandi ... Trees 11 Congresses 9 Anatomy 4 Testing 4 Botany 3 Economic aspects 3 Forest ecology 3 Forest products 3 Hardwoods 3 Lumber 3 Lumbering 3 Preservation 3 Sawmills 3 Shorea 3 Standards 3 Building, Wooden 2 Directories 2 Drying 2 Euphorbiaceae 2 Grading 2 Marketing 2 Nomenclature 2 Paneling 2 riduci ...