Classification
320 - Political science
1,494
330 - Economics
1,455
780 - Music
963
900 - History & geography
491
300 - Social sciences
442
340 - Law
212
850 - Italian, Romanian & related literatures
207
700 - The arts; fine & decorative arts
188
370 - Education
183
800 - Literature & rhetoric
160
630 - Agriculture & related technologies
141
616 - Diseases
135
100 - Philosophy & psychology
107
610 - Medicine & health
97
140 - Specific philosophical schools
84
720 - Architecture
80
820 - English & Old English literatures
74
410 - Linguistics
73
945 - Italian Peninsula & adjacent islands
68
500 - Natural sciences & mathematics
67
333 - Economics of land & energy
64
851 - Italian poetry
60
400 - Language
57
600 - Technology
56
363 - Other social problems & services
51
380 - Commerce, communications & transportation
51
000 - Computer science, information & general works
48
301 - Sociology & anthropology
47
530 - Physics
46
853 - Italian fiction
42
304 - Factors affecting social behavior
39
519 - Probabilities & applied mathematics
36
170 - Ethics
35
515 - Analysis
34
520 - Astronomy & allied sciences
34
510 - Mathematics
33
658 - General management
33
200 - Religion
32
620 - Engineering & allied operations
32
195 - Philosophy of Italy
24
338 - Production
24
306 - Culture & institutions
23
809 - History, description & criticism
22
940 - History of Europe
21
371 - Schools & their activities; special education
20
551 - Geology, hydrology & meteorology
20
016 - Bibliographies of works on specific subjects
19
305 - Social groups
18
150 - Psychology
17
378 - Higher education
17
more ...