- FOR 000: Belonging to the Subject; not further Classified
- FOR 001: Forestry Science in General
- FOR 100: Environmental Factors; Forestry Biology
- FOR 110: Forestry Site Factors: Climate, Situation, Soil, Hydrology (Water Conservation, Soil Conservation and Erosion)
- FOR 120: Forestry Biology
- FOR 130: Forestry Zoology
- FOR 140: Systematic Forest Zoology
- FOR 150: Forest Animal Ecology
- FOR 160: Forest Botany; Forest GeneticsPlant Genetics see also BIO 450
- FOR 170: Systematic Forest Botany; Dendrology
- FOR 180: Plant Ecology
- FOR 190: Other
- FOR 110: Forestry Site Factors: Climate, Situation, Soil, Hydrology (Water Conservation, Soil Conservation and Erosion)
- FOR 200: Silviculture
- FOR 220: Silvicultural Systems; Constitution and Composition of Stands; Forms of Stand
- FOR 230: Regeneration and Formation of Stands
- FOR 240: Tending of Stands and Trees; Thinning
- FOR 250: Treatment of Defective, Derelict or Very Open Stands
- FOR 260: Combinations of Forestry with Agriculture and Pastoral Husbandry, (Agroforestry). Irrigated and Floodland Forests, Shelterbelts etc., and their Treatment
- FOR 270: ArboretaForest Nursery see LAN 493
- FOR 280: Husbandry [Growing and Collection] of Forest Products Other than Wood
- FOR 290: Other
- FOR 220: Silvicultural Systems; Constitution and Composition of Stands; Forms of Stand
- FOR 300: Work Science (Work Studies); Logging and Transport; Engineering
- FOR 301: Work Science (Work Studies): General; Forest Work
- FOR 310: Logging and Transport: General
- FOR 320: Felling and Related Operations
- FOR 330: Degree of Utilization and Waste; Clearing the Felling Site
- FOR 340: Storage of Wood in the Forest and at Log Dumps (“Landings”)
- FOR 350: Performance Measurements for Determining Piece Rates in Felling and Related Operations
- FOR 360: Tools, Machines and Equipment for Felling and Related Operations
- FOR 370: Transport
- FOR 380: Forest Engineering
- FOR 390: Other
- FOR 301: Work Science (Work Studies): General; Forest Work
- FOR 400: Injuries and Protection
- FOR 410: General Technique of Forest Protection; Types of Injury
- FOR 420: Injuries from Abiotic Agencies (excluding Fire)
- FOR 430: Forest Fires
- FOR 440: Damage by Harmful Plants. Fingus Diseases. Virus Diseases
- FOR 450: Damage by Animals
- FOR 460: Damage to Tree Growth by Man
- FOR 480: Injuries Due to Unknown or Complex Causes (Except Forest Decline)
- FOR 490: Other
- FOR 410: General Technique of Forest Protection; Types of Injury
- FOR 500: Forest Mensuration; Wood Growth; Development and Structure of Stands; Surveying and MappingForest Valuation see FOR 950
- FOR 510: Systems and Units of Measurement (including Conversion Tables)
- FOR 520: Forest Inventory; Measurements of the Stem Dimensions and Volume of Trees, Stands, Forests and Timber
- FOR 530: Special Measurements of Trees and Stands (Crown Dimensions, Stand Density etc.)
- FOR 540: Assessment of Site Quality
- FOR 550: Age Determination
- FOR 560: Increment (Methods of Measurement and Results); Development and Structure of Stands
- FOR 580: Surveying and Mapping. Aerial Survey
- FOR 590: Other
- FOR 510: Systems and Units of Measurement (including Conversion Tables)
- FOR 600: Forest Economics; Forest Management; Business Economics of Forestry; Administration and Organization of the Forest Enterprises
- FOR 610: Forest Management (General, Theory and Principles)
- FOR 620: Methods of Management. Working Plans (Short and Long Term ); Annual or Periodic Yield; Yield Regulation
- FOR 630: Other Forest Management Questions
- FOR 640: Forestry as a Business: General
- FOR 650: Special Business Problems of Timber-Growing
- FOR 660: Costing of Logging Operations
- FOR 670: Forest Accounting
- FOR 680: Administration and Organization of Forest Enterprises
- FOR 690: Other
- FOR 610: Forest Management (General, Theory and Principles)
- FOR 700: Marketing of Forest Products; Economics of Forest Transport and the Wood Industries
- FOR 710: Marketing of Forest Products: General
- FOR 720: the Quantitative Aspects of Marketing; Demand and Supply
- FOR 730: Prices
- FOR 740: Trade Policy (Other than Trade Customs and Usages)
- FOR 750: Trade Customs and Usages
- FOR 760: Accountancy; Business Planning and Administration in Marketing
- FOR 770: Marketing: Other
- FOR 780: Forest Transport Industry
- FOR 790: Forest Products Industries
- FOR 710: Marketing of Forest Products: General
- FOR 800: Forest Products and their UtilizationWood as Building Material see also BAU 312
- FOR 810: Wood and Bark (Structure and Properties)
- FOR 820: Conversion, Shaping, Assembly and Finishing of Wood: General
- FOR 830: Timber Manufacturing Industries and Products. Uses of Wood as Such
- FOR 840: Preservation and Other Treatments to Improve the Properties of Wood; Damage by Biological Agencies and its Control; Seasoning; Timberyard Practice (Handling and Storage)
- FOR 850: Grading of Wood and Wood Products
- FOR 860: Pulp Industries; Composite Materials Made Wholly or Partly of Woody Matte;. Chemical Utilization of Wood
- FOR 870: Charcoal; Biochar
- FOR 880: Biomass Production in Forestry; Wood for Energy Production
- FOR 890: Other (“Minor”) Forest Products; Carbon Sequestration
- FOR 810: Wood and Bark (Structure and Properties)
- FOR 900: Forests and Forestry from the National Point of View; Social Economics of ForestryLegal Aspects see also JUR ff
- FOR 901: General Forest Policy; Forestry and EnvironmentEcological aspects see also UMW ff
- FOR 902: History of Forests and Forestry
- FOR 910: Land Use, Land Use Policy; Afforestation PolicyForest Policy in Planning see also RPL 856
- FOR 920: Forest Ownership; Ownership Policy
- FOR 930: Public Supervision and Regulation of Forestry, including Forestry Legislation
- FOR 940: Other Methods to Implement Forest Policy
- FOR 950: Forest Taxation; Land Expectation Value
- FOR 960: Forest Labour Questions; Labour Questions in Wood Transport and the Wood Industries
- FOR 970: International Forestry Policy and Other International Collaboration
- FOR 990: Other
- FOR 901: General Forest Policy; Forestry and Environment