| ↑ | AA. | Studies on Africa and other areas |   ≈ 960 |   |
| ↑ | CSPE | African and Asian area studies | ≈ 950 960 | |
| ↑ | D.PEN | Penal law / Criminal law | ≈ 345 | |
| ↑ | D.PRI | Private law | ≈ 346 | |
| ↑ | D.PRI.A | Companies, enterprises, shareholders | ≈ 346.06 | |
| ↑ | D.PRI.B | Commercial law | ≈ 346.07 | |
| ↑ | D.PRI.C | Private and civil law, civil procedure | ≈ 346 | |
| ↑ | D.PRI.E | Bankruptcy law | ≈ 346.078 | |
| ↑ | D.PRI.F | Industrial law (patents and licenses) | ≈ 346 | |
| ↑ | D.PRI.G | Labour law | ≈ 344 | |
| ↑ | D.PUB | Public law | ≈ 342 | |
| ↑ | D.PUB.A | Regional law | ≈ 342 | |
| ↑ | D.PUB.B | Parliamentary law | ≈ 342 | |
| ↑ | D.PUB.C | Public economic law, accounting | ≈ 342 | |
| ↑ | D.PUB.D | Philosophy of law, political sciences, sociology | ≈ 340.1 342 | |
| ↑ | D.PUB.E | Science of finance, tax law | ≈ 343.04 | |
| ↑ | D.PUB.F | Administrative law | ≈ 342 | |
| ↑ | D.PUB.G | International law | ≈ 342 | |
| ↑ | D.PUB.H | European Union law | ≈ 342 341.2422 | |
| ↑ | D.PUB.L | Public comparative law | ≈ 342 340.2 | |
| ↑ | D.PUB.M | Environmental law | ≈ 344.046 | |
| ↑ | D.PUB.N | Health law | ≈ 342 344.04 | |
| ↑ | DD. | Diplomatic documents | ≈ 327.2 | |
| ↑ | DD.CH | Diplomatic documents of Switzerland | ≈ 327.2 | |
| ↑ | DD.FR | Diplomatic documents of France | ≈ 327.2 | |
| ↑ | DD.GB | Diplomatic documents of Great Britain | ≈ 327.2 | |
| ↑ | DD.IT | Diplomatic documents of Italy | ≈ 327.2 | |
| ↑ | DD.IT AFR | Diplomatic documents Italy / Africa | ≈ 327.2 | |
| ↑ | DD.USA | American diplomatic documents | ≈ 327.2 | |
| ↑ | I.B | History of politcal doctrines | ≈ 320.09 | |
| ↑ | I.C | General and contemporary history | ≈ 900 909.8 | |
| ↑ | I.D | Doctrines (Orient) | ≈ 320 | |
| ↑ | I.E | History of political parties and movements | ≈ 324.209 | |
| ↑ | I.F | Slavery | ≈ 326 | |
| ↑ | I.G | Archives | ≈ 320 | |
| ↑ | I.H | Politcal doctrines (Middle Ages) | ≈ 320.01 | |
| ↑ | I.I | History of social institutions | ≈ 306.09 | |
| ↑ | II.A | International politics | ≈ 327 | |
| ↑ | II.B | International politics (conflicts) | ≈ 327.16 | |
| ↑ | II.C | International law | ≈ 341 | |
| ↑ | II.D | International politics (manuals and depositions) | ≈ 327 | |
| ↑ | II.E | Laws of Native Americans | ≈ 970 348 | |
| ↑ | II.F | Diplomatic relations | ≈ 327 | |
| ↑ | II.G | Foreign affairs | ≈ 327.1 | |
| ↑ | III.A | [Europe] | ≈ 940 | |
| ↑ | III.B | Europe | ≈ 940 | |
| ↑ | III.C | International politics | ≈ 327 | |
| ↑ | III.D | Italian politics | ≈ 940 | |
| ↑ | III.E | History of fascism | ≈ 945.0915 | |
| ↑ | III.F | European history | ≈ 940 | |
| ↑ | III.G | Rome (politics) | ≈ 936 | |
| ↑ | III.H | European history | ≈ 940 | |
| ↑ | ISPE | Economic politics | ≈ 330 | |
| ↑ | IV.A | Various | | |
| ↑ | IV.B | Italy (geography) | ≈ 914.5 | |
| ↑ | IV.C | USA | ≈ 917.3 | |
| ↑ | IV.D | Vatican | ≈ 945.634 | |
| ↑ | IX.A | Poltical studies | ≈ 320 | |
| ↑ | IX.B | Political philosophy | ≈ 320.01 | |
| ↑ | IX.C | Political sociology | ≈ 301 | |
| ↑ | IX.D | International politics | ≈ 327 | |
| ↑ | IX.E | Political studies | ≈ 320 | |
| ↑ | IX.F | Political studies (democracy) | ≈ 321.8 | |
| ↑ | IX.G | Political studies (Church) | ≈ 322.1 | |
| ↑ | SP.1 | History of political thought and political philosophy | ≈ 320.01 | |
| ↑ | SP.10 | International relations | ≈ 327 | |
| ↑ | SP.11 | Ideology | ≈ 320.5 | |
| ↑ | SP.12 | Political parties and party systems | ≈ 324.2 | |
| ↑ | SP.13 | Pressure groups and movements | ≈ 322.43 | |
| ↑ | SP.14 | Politcal institutions and regimes | ≈ 321 | |
| ↑ | SP.15 | Science of administration and organization | ≈ 350 | |
| ↑ | SP.16 | Public politics analysis | ≈ 320 | |
| ↑ | SP.17 | Local government | ≈ 321 | |
| ↑ | SP.18 | Electoral behavior | ≈ 324.63 324.7 | |
| ↑ | SP.19 | Political culture and socialization | ≈ 323 | |
| ↑ | SP.2 | Sociology and theory of law | ≈ 340.115 | |
| ↑ | SP.20 | Political change and development | ≈ 321.09 | |
| ↑ | SP.21 | Description of political systems | ≈ 321 | |
| ↑ | SP.22 | Political anthropology | ≈ 301 | |
| ↑ | SP.23 | Sociological theory | ≈ 301.01 | |
| ↑ | SP.3 | Political and social psychology | ≈ 302 | |
| ↑ | SP.4 | Epistemology | ≈ 121 | |
| ↑ | SP.5 | General handbooks and anthologies | | |
| ↑ | SP.6 | General political theory | ≈ 320.01 | |
| ↑ | SP.7 | Political powers and elites | ≈ 324.4 | |
| ↑ | SP.8 | Political and social conflicts | ≈ 303.6 | |
| ↑ | SP.9 | Political communications and symbols | ≈ 324 | |
| ↑ | STA | Statistics | ≈ 310 | |
| ↑ | STA10 | International trade | ≈ 343.087 | |
| ↑ | STA11 | Tourism and transport | ≈ 790.18 358.44 | |
| ↑ | STA12A | Cultural statistics | ≈ 310 306 | |
| ↑ | STA12B | Show business and free time | ≈ 353.77 790.1 | |
| ↑ | STA13 | Legal statistics | ≈ 310 340 | |
| ↑ | STA14A | Electoral statistics | ≈ 310 324.6 | |
| ↑ | STA14B | Residences and building | ≈ 352.16 | |
| ↑ | STA15 | Economic cycles and conjuncture | ≈ 330.904 | |
| ↑ | STA16 | Market researches | ≈ 658.83 | |
| ↑ | STA1A | Handbooks of statistics and economy | ≈ 310.723 330.01 | |
| ↑ | STA1B | Conferences' acts and bibliographies | ≈ 310 | |
| ↑ | STA1C | Methodological studies (ONU) | ≈ 341.23 | |
| ↑ | STA2A | International statistics annual reports | ≈ 314 | |
| ↑ | STA2B | Annual reports of Italian provinces and municipalities | | |
| ↑ | STA2D | ISTAT (methods and regulations) | ≈ 310 | |
| ↑ | STA3A | Environmental problems | ≈ 363.7 310 | |
| ↑ | STA3B | Urban demography and economy | ≈ 304.6 330.91732 | |
| ↑ | STA3C | Health statistics | ≈ 310 616 | |
| ↑ | STA3D | Demographic annual reports | ≈ 310 304.6 | |
| ↑ | STA3E | Migratory movements | ≈ 304.8 | |
| ↑ | STA3F | Demography (handbooks and studies) | ≈ 304.6 310 | |
| ↑ | STA3G | Italian census of population | | |
| ↑ | STA3H | Regional statistic news reports | | |
| ↑ | STA4 | Statistics and labour economics | ≈ 310 331 | |
| ↑ | STA5 | Consumer goods (prices) | ≈ 310 338.52 | |
| ↑ | STA6A | National accounting | | |
| ↑ | STA6C | Pubblic finance | | |
| ↑ | STA7 | Economy (banks) | | |
| ↑ | STA9B | Agricultural economics statistics | | |
| ↑ | STA9D | Industry and services | | |
| ↑ | STA9E | Commercial industry (census) | | |
| ↑ | STACONS | Statistic (literature) | | |
| ↑ | V.B | Turkey and Middle East | ≈ 950 957 | |
| ↑ | V.C | East Europe (Balkan area) | ≈ 949.6 | |
| ↑ | V.D | Spain and Portugal | ≈ 946 | |
| ↑ | V.E | International politics | ≈ 327 | |
| ↑ | V.F | Great Britain | ≈ 941 | |
| ↑ | VI.A | Russia | ≈ 947 | |
| ↑ | VI.B | Germany, Austria | ≈ 943 | |
| ↑ | VI.C | France, Switzerland, Belgium, the Netherlands | ≈ 944 | |
| ↑ | VI.D | North America | ≈ 970 | |
| ↑ | VI.E | South America | ≈ 980 | |
| ↑ | VII.D | International politics | ≈ 327 | |
| ↑ | VII.E | Corporative law | | |
| ↑ | VIII.B | European history | ≈ 940 | |
| ↑ | VIII.C | Middle Ages | ≈ 909.07 | |
| ↑ | VIII.D | European political history | ≈ 940 | |
| ↑ | VIII.E | Diplomatic agreements | ≈ 327.2 | |
| ↑ | VIII.F | History | ≈ 900 | |
| ↑ | X.A | Postwar resistance and politics | | |
| ↑ | XII.B | First World War history | ≈ 940.3 | |
| ↑ | XII.C | Political treaties | | |
| ↑ | XII.D | Foreign policy FR | ≈ 327.1 | |
| ↑ | XII.E | Second World War history | ≈ 940.53 | |
| ↑ | XII.F | European political history | ≈ 940 | |
| ↑ | XII.G | European international politics | ≈ 327 | |
| ↑ | XII.H | World War | ≈ 909 | |
| ↑ | XII.I | History, miscellany | ≈ 900 | |
| ↑ | XII.L | Military history in fascist wars | ≈ 940 | |
| ↑ | XIII.A | Economic policy | ≈ 337 | |
| ↑ | XIII.B | Economic policy FR | ≈ 337 | |
| ↑ | XIV.A | Economic historycal studies | ≈ 330.09 | |
| ↑ | XIV.B | Financial economics | ≈ 336 | |
| ↑ | XIV.C | Political economy | ≈ 330 | |
| ↑ | XIV.D | Liberalism and protectionism | ≈ 382 320.51 | |
| ↑ | XIV.E | Industry and finance | | |
