Classification
570 - Life sciences; biology
64
610 - Medicine & health
58
571 - Physiology & related subjects
38
304 - Factors affecting social behavior
37
330 - Economics
37
809 - History, description & criticism
27
618 - Gynecology, obstetrics, pediatrics & geriatrics
19
300 - Social sciences
17
900 - History & geography
15
940 - History of Europe
13
150 - Psychology
12
320 - Political science
12
305 - Social groups
11
100 - Philosophy & psychology
10
301 - Sociology & anthropology
9
700 - The arts; fine & decorative arts
9
612 - Human physiology
7
616 - Diseases
7
658 - General management
6
140 - Specific philosophical schools
5
306 - Culture & institutions
5
371 - Schools & their activities; special education
5
380 - Commerce, communications & transportation
5
000 - Computer science, information & general works
4
200 - Religion
4
361 - Social problems & social welfare in general
4
363 - Other social problems & services
4
370 - Education
4
650 - Management & auxiliary services
4
340 - Law
3
362 - Social welfare problems & services
3
930 - History of ancient world to ca. 499
3
004 - Data processing & computer science
2
336 - Public finance
2
353 - Specific fields of public administration
2
600 - Technology
2
759 - Historical, geographic & persons treatment
2
016 - Bibliographies of works on specific subjects
1
133 - Specific topics in parapsychology & occultism
1
153 - Mental processes & intelligence
1
170 - Ethics
1
222 - Historical books of Old Testament
1
236 - Eschatology
1
271 - Religious orders in church history
1
272 - Persecutions in church history
1
282 - Roman Catholic Church
1
296 - Judaism
1
303 - Social processes
1
307 - Communities
1
327 - International relations
1
more ...