Classification
004 - Data processing & computer science
5
006 - Special computer methods
2
070 - News media, journalism & publishing
1
100 - Philosophy & psychology
4
109 - Historical & collected persons treatment
2
120 - Epistemology, causation & humankind
1
141 - Idealism & related systems
1
149 - Other philosophical systems
1
152 - Perception, movement, emotions & drives
1
190 - Modern western philosophy
2
200 - Religion
2
302 - Social interaction
1
304 - Factors affecting social behavior
2
305 - Social groups
1
306 - Culture & institutions
7
320 - Political science
5
330 - Economics
2
333 - Economics of land & energy
3
340 - Law
6
363 - Other social problems & services
2
370 - Education
6
375 - Curricula
1
380 - Commerce, communications & transportation
1
400 - Language
74
401 - Philosophy & theory
9
404 - Special topics
2
405 - Serial publications
1
407 - Education, research & related topics
8
410 - Linguistics
37
414 - Phonology & phonetics
4
415 - Grammar
8
417 - Dialectology & historical linguistics
3
418 - Standard usage & applied linguistics
18
420 - English & Old English
15
430 - Germanic languages; German
102
431 - German writing systems & phonology
1
432 - German etymology
1
433 - German dictionaries
3
435 - German grammar
4
437 - German language variations
5
438 - Standard German usage
4
440 - Romance languages; French
1
472 - Classical Latin etymology
1
490 - Other languages
2
491 - East Indo-European & Celtic languages
7
500 - Natural sciences & mathematics
5
610 - Medicine & health
1
616 - Diseases
1
620 - Engineering & allied operations
1
621 - Applied physics
1
more ...