Classification
900 - History & geography
374
800 - Literature & rhetoric
82
200 - Religion
81
610 - Medicine & health
69
700 - The arts; fine & decorative arts
69
330 - Economics
55
340 - Law
48
616 - Diseases
44
300 - Social sciences
42
940 - History of Europe
41
320 - Political science
34
140 - Specific philosophical schools
31
809 - History, description & criticism
31
100 - Philosophy & psychology
30
306 - Culture & institutions
22
305 - Social groups
20
410 - Linguistics
19
400 - Language
17
230 - Christianity & Christian theology
16
189 - Medieval western philosophy
14
271 - Religious orders in church history
14
304 - Factors affecting social behavior
14
370 - Education
14
720 - Architecture
14
658 - General management
13
000 - Computer science, information & general works
12
510 - Mathematics
12
520 - Astronomy & allied sciences
12
941 - British Isles
12
004 - Data processing & computer science
11
282 - Roman Catholic Church
11
617 - Surgery & related medical specialties
11
150 - Psychology
10
270 - History of Christianity & Christian church
10
296 - Judaism
10
909 - World history
10
930 - History of ancient world to ca. 499
10
942 - England & Wales
10
333 - Economics of land & energy
9
363 - Other social problems & services
9
620 - Engineering & allied operations
9
780 - Music
9
005 - Computer programming, programs & data
8
297 - Islam, Babism & Bahai Faith
8
380 - Commerce, communications & transportation
8
621 - Applied physics
8
109 - Historical & collected persons treatment
7
301 - Sociology & anthropology
7
398 - Folklore
7
612 - Human physiology
7
more ...