| P 001/002 | Research. Scientific communication. Information services | 
| P 004 | Information technology. Computer software. Computer networks | 
| P 1 | Philosophy. Psychology | 
| P 3 | Social sciences. Politics. Law. Jurisprudence. Public administration | 
| P 33 | National economy. Trade. Work. Regional economics. Housing economics | 
| P 37 | Education. Universities | 
| P 51 | Mathematics. Statistics | 
| P 528 | Surveying. Geodesy. Photogrammetry | 
| P 53 | Physics. Units. Quantities | 
| P 531 | General mechanics. Mechanics of solid and rigid bodies | 
| P 532/533 | Mechanics of liquids and gases | 
| P 534/535 | Acoustics. Vibration of bodies. Optics | 
| P 536 | Heat. Thermodynamics | 
| P 537 | Electricity. Magnetism | 
| P 539 | Solid state physics. Strenght of materials. Nuclear physics | 
| P 54 | Chemistry | 
| P 55 | Earth sciences | 
| P 57/59 | Microbiology. Biochemistry. Biotechnology | 
| P 61 | Medicine. Biomedical engineering | 
| P 613.6 | Occupational health. Safety engineering. Environmental health | 
| P 614.7 | Environmental sciences | 
| P 62 | Engineering. Machine design. Maintenance of machines. | 
| P 62-5 | Control engineering. Automation | 
| P 620 | Materials sciences. Materials testing | 
| P 620.9 | Energy economy. Renewable resources | 
| P 621 | Mechanical engineering. Hydraulics. Pneumatics | 
| P 621.3 | Electrical engineering | 
| P 621.31 | Electrical power engineering | 
| P 621.37/.38 | Electronics | 
| P 621.39 | Communication engineering. Digital signal processing | 
| P 621.7 | Production engineering | 
| P 624 | Civil engineering | 
| P 624.01/.04 | Structural engineering. Structures. Structural mechanics | 
| P 624.1 | Substructures. Earthworks. Foundations | 
| P 625/627 | Highway engineering. Land transportation | 
| P 628 | Environmental engineering | 
| P 628.1 | Water supply | 
| P 628.2/.4 | Sewage. Sewerage. Waste handling | 
| P 629 | Vehicle engineering | 
| P 65 | Industrial management | 
| P 651 | Business administration. Knowledge management | 
| P 656 | Transportation engineering | 
| P 657 | Accountancy. Finance | 
| P 658 | Industrial engineering and management | 
| P 658.8 | Marketing. Internationalisation | 
| P 66 | Process engineering. Energy engineering. Metals. Ceramics | 
| P 676 | Pulp and paper industry | 
| P 677 | Textile and clothing technology | 
| P 678 | Plastics. Polymer engineering | 
| P 69 | Building trade. Construction economics. Renovation. Facilities management. | 
| P 691/694 | Building materials. Structural parts. Building work | 
| P 696/699 | HVAC-technology. Protection of building | 
| P 7 | Arts. Interior decorating. Photography | 
| P 71 | Planning. Land use. Planning of traffic routes | 
| P 711.2/.3 | Country planning | 
| P 711.4 | Urban planning and design. Town planning | 
| P 711.5 | Parts of settlements. Centres. Subcentres. Residential areas | 
| P 712/719 | Landscape planning. Recreatial areas | 
| P 72 | Architecture. History of architecture | 
| P 72.01/.02 | Theory and philosophy of architecture | 
| P 72.07 | Architects | 
| P 725/727 | Public buildings. Buildings for educational, scientific, cultural purposes | 
| P 728 | Domestic architecture | 
| P 8 | Dictionaries. Language guides | 
| P 91 | Geography | 
| P 92/99 | History. Personal directories | 
| P Ref G 0 | Science. Research. Universities | 
| P Ref G 006 | Standards | 
| P Ref G 03 | Encyclopedias | 
| P Ref G 038 | Dictionaries. Abbreviations. Thesauri. Symbols | 
| P Ref G 058 | Product information. Directories of organizations | 
| P Ref G 084 | Maps. Timetables | 
| P Ref G 3 | National economy. Law. Public administration |