Classification
400 - Language
52
410 - Linguistics
42
420 - English & Old English
30
900 - History & geography
25
820 - English & Old English literatures
19
700 - The arts; fine & decorative arts
18
100 - Philosophy & psychology
17
320 - Political science
13
414 - Phonology & phonetics
13
340 - Law
11
000 - Computer science, information & general works
9
200 - Religion
9
370 - Education
9
780 - Music
9
170 - Ethics
7
301 - Sociology & anthropology
6
380 - Commerce, communications & transportation
6
480 - Hellenic languages; classical Greek
6
140 - Specific philosophical schools
5
427 - English language variations
5
491 - East Indo-European & Celtic languages
5
800 - Literature & rhetoric
5
120 - Epistemology, causation & humankind
4
306 - Culture & institutions
4
330 - Economics
4
398 - Folklore
4
600 - Technology
4
610 - Medicine & health
4
333 - Economics of land & energy
3
495 - Languages of East & Southeast Asia
3
620 - Engineering & allied operations
3
160 - Logic
2
300 - Social sciences
2
302 - Social interaction
2
304 - Factors affecting social behavior
2
417 - Dialectology & historical linguistics
2
421 - English writing system & phonology
2
457 - Italian language variations
2
467 - Spanish language variations
2
499 - Austronesian & other languages
2
500 - Natural sciences & mathematics
2
576 - Genetics & evolution
2
840 - Literatures of Romance languages
2
190 - Modern western philosophy
1
193 - Philosophy of Germany & Austria
1
297 - Islam, Babism & Bahai Faith
1
335 - Socialism & related systems
1
384 - Communications; telecommunication
1
422 - English etymology
1
437 - German language variations
1
more ...