The systematic classification was originally designed by Elsa Oppenheim, daughter of the famous professor in constitutional and administrative law Jacques Oppenheim. It was published for the first time in 1916 in the Catalogue de la bibliothèque du Palais de la paix. This in-house systematic classification of international law was modernised and updated as of January 1, 2016. Unfortunately, the systematic classification is no longer supported by our current library automatisation system. Nevertheless, the systematic classification still reflects our Collection Profile in full extent. It supports your search with regard to content and is divided into the following sections:
000.01 Public international law
000.02 Binding force, sanctions
000.03 Comprehensive studies, manuals
000.04 Institutions and associations
000.05 International law and municipal law
000.06 State practice
000.07 The Hague Academy of International Law
003.01 History of international law
003.02 Principles
006.01 Sources of international law
006.02 Codification and progressive development of international law
006.03 Customary international law
006.04 Jus cogens, erga omnes obligations
006.05 Treaties
009.01 Subjects of international law
009.02 Individuals
009.03 Non-State entities
009.04 States
012.01 Responsibility and liability
012.02 State responsibility
015.01 Territory and jurisdiction
015.02 Boundary questions, territorial questions
015.03 Colonies, dependencies, decolonization
015.04 International commons, common heritage of mankind
015.05 International waterways
015.06 Succession of States
018.01 Sea
018.02 Archipelagoes, bays, gulfs, islands, rocks
018.03 Contiguous zone, continental shelf
018.04 Deep sea, seabed
018.05 Exclusive Economic Zone
018.06 Fisheries
018.07 High seas
018.08 Internal waters, territorial waters
018.09 Mare liberum, Mare clausum
018.10 Marine environment
018.11 Sea: settlement of disputes
018.12 Straits
024.01 Air law
024.02 Space law
025.01 Polar regions
025.02 Arctic
025.03 Antarctica
025.04 Greenland
025.05 Spitsbergen
027.01 Organs of the States for their international relations
027.02 Extraterritoriality, immunities from jurisdiction
030.01 Economic and financial relations
030.02 Customs, customs unions, economic unions, free zones
030.03 Economic assistance, foreign aid
030.04 International labour law, social policy
030.05 World Trade System, GATT/WTO
031.01 Communications
031.02 Information, telecommunications
031.03 Transport
032.01 Food
032.02 Health
033.01 Culture, cultural heritage
033.02 Education
033.03 Sport
034.01 Environment
035.01 International organizations
036.01 League of Nations
036.02 United Nations
037.01 Regional organizations
037.02 African organizations
037.03 American organizations
037.04 Arab and Islamic organizations
037.05 Asian and Pacific organizations
037.06 European organizations
042.01 European Union
042.02 European Union: agriculture
042.03 European Union: citizenship
042.04 European Union: competition, State aids
042.05 European Union: consumers
042.06 European Union: Court of Justice, case-law
042.07 European Union: culture, media
042.08 European Union: Customs Union, free movement
042.09 European Union: development and cooperation
042.10 European Union: economic and monetary affairs
042.11 European Union: education
042.12 European Union: employment, labour, social policy
042.13 European Union: energy
042.14 European Union: enlargement
042.15 European Union: enterprise
042.16 European Union: environment
042.17 European Union: food safety
042.18 European Union: foreign and security policy
042.19 European Union: health
042.20 European Union: humanitarian aid and civil protection
042.21 European Union: human rights
042.22 European Union: information
042.23 European Union: institutional affairs
042.24 European Union: Justice and Home Affairs
042.25 European Union: maritime affairs and fisheries
042.26 European Union: private law
042.27 European Union: regional policy
042.28 European Union: research and innovation
042.29 European Union: Single Market
042.30 European Union: space
042.31 European Union: sport
042.32 European Union: taxation
042.33 European Union: trade
042.34 European Union: transport
060.01 Human rights
060.02 Human rights: Africa
060.03 Human rights: Americas
060.04 Human rights: Asia
060.05 Human rights: Europe
060.06 Humanitarian questions
060.07 Nationality, Statelessness
061.01 Indigenous peoples
061.02 Minorities
061.03 Self-determination
062.01 Asylum
062.02 Immigration law
062.03 Migration
062.04 Refugees
063.01 International criminal law
063.02 International crimes
063.03 International criminal courts and tribunals
064.01 Transnational crime
065.01 Mutual cooperation in criminal matters
065.02 Extradition
067.01 Terrorism
069.01 Peace and security
069.02 Arms control, arms trade
069.03 Disarmament
069.04 Intervention
069.05 Nuclear weapons
069.06 Peacekeeping, peacebuilding, transitional justice
069.07 Unlawful means of warfare
069.08 Use of force, self-defense
069.09 The Hague Peace Conferences (1899, 1907)
069.10 Peace Palace
072.01 Settlement of international disputes
072.02 Conciliation, good offices, mediation, negotiation
072.03 International arbitration
072.04 International Court of Justice
072.05 Permanent Court of Arbitration
072.06 Permanent Court of International Justice
075.01 Coercion, embargo, pacific blockade, retorsion and reprisals
075.02 Causes of war, lawfulness, renunciation
075.03 International humanitarian law
075.03.1 Declaration of war
075.03.2 International humanitarian law: conduct of hostilities
075.03.3 International humanitarian law: scope of protection
075.03.4 International humanitarian law: property, war damage
075.03.5 Contraband of war and blockade
075.03.6 Armistice, truce, termination of war
075.03.7 Peace treaties
075.03.8 War reparations
075.04 Neutrality
077.01 Private international law
078.01 International family law
078.02 International law of persons
078.03 International law of succession
081.01 International commercial law
081.02 International bankruptcy law
081.03 International contracts
081.04 Intellectual property
081.05 International property law
081.06 International maritime law
084.01 Torts
087.01 International law of procedure
087.02 International commercial arbitration
087.03 Effects of foreign instruments
087.04 Jurisdiction
087.05 Recognition and enforcement of foreign judgments, arbitral awards
093.01 Comparative law
093.02 Municipal law
093.03 Oriental countries, Islamic law
096.01 Public law
096.03 Administrative law
096.04 Agricultural law
096.06 Constitutional law, political science
096.09 Constitutional rights, citizenship
096.10 Consumer law
096.12 Economic law
096.13 Election law
096.14 Energy law
096.15 Entertainment law
096.16 Environmental law
096.18 Financial law
096.20 Fiscal law
096.21 Health law, medical law
096.22 Information law
096.23 Immigration law
096.24 Judicial system
096.27 Labour law
096.28 Media law
096.30 Military law
096.31 Mining law
096.32 Social security law
096.33 Transport
096.34 Water law
099.01 Criminal law and procedure
099.03 Military criminal law
102.01 Private law, civil law
102.03 Family law
102.06 Law of persons
102.09 Law of succession
105.01 Commercial law
105.03 Bankruptcy law
105.06 Company law
105.09 Competition law
105.12 Contract law
105.13 Insurance law
105.15 Intellectual property
105.18 Maritime law, inland navigation
105.21 Property law
108.01 Torts
111.01 Law of civil procedure
111.03 Alternative dispute resolution
111.06 Arbitration
114.01 Law in general
114.02 Canon law, State and Church relations
114.03 Customary law
114.04 Philosophy of law, natural law
114.05 Roman law
114.06 Sources of law, legal history
117.01 Economics and statistics
120.01 History
120.02 Ancient history
120.03 Middle Ages
120.04 Modern history till 1648
120.05 Modern history: 1648-1789
120.06 Modern history: 1789-1815
120.07 Modern history: 1815-1919
120.08 Modern history since 1919
120.09 World War I
120.10 World War II
120.11 Various wars
123.01 International relations
123.02 Alliances
123.03 Foreign policy
123.04 Internationalism and international life
126.01 Diplomacy
126.02 Diplomatic and consular law
126.03 Diplomatic protection
132.01 War and peace research
132.02 Military art and science
132.03 War economics
135.01 Miscellaneous works
138.01 Periodicals and serial publications
141.01 Festschriften
144.01 Biographies
147.01 Atlases, maps
147.02 Bibliographies
147.03 Dictionaries
147.04 Encyclopedias
147.05 Library economy
150.01 Grotius collection
153.01 Peace movement collection