Classification
370 - Education
47
330 - Economics
46
338 - Production
30
305 - Social groups
25
320 - Political science
22
371 - Schools & their activities; special education
22
362 - Social welfare problems & services
19
361 - Social problems & social welfare in general
16
306 - Culture & institutions
14
374 - Adult education
13
300 - Social sciences
12
331 - Labor economics
11
340 - Law
10
780 - Music
9
303 - Social processes
7
332 - Financial economics
7
372 - Elementary education
7
378 - Higher education
6
658 - General management
6
001 - Knowledge
5
174 - Occupational ethics
5
304 - Factors affecting social behavior
5
325 - International migration & colonization
5
333 - Economics of land & energy
5
360 - Social problems & services; associations
5
930 - History of ancient world to ca. 499
5
943 - Central Europe; Germany
5
100 - Philosophy & psychology
4
302 - Social interaction
4
337 - International economics
4
339 - Macroeconomics & related topics
4
379 - Public policy issues in education
4
430 - Germanic languages; German
4
830 - Literatures of Germanic languages
4
016 - Bibliographies of works on specific subjects
3
070 - News media, journalism & publishing
3
155 - Differential & developmental psychology
3
193 - Philosophy of Germany & Austria
3
229 - Apocrypha & pseudepigrapha
3
230 - Christianity & Christian theology
3
301 - Sociology & anthropology
3
336 - Public finance
3
341 - Law of nations
3
401 - Philosophy & theory
3
435 - German grammar
3
438 - Standard German usage
3
782 - Vocal music
3
808 - Rhetoric & collections of literature
3
831 - German poetry
3
833 - German fiction
3
more ...