Classification
004 - Data processing & computer science
26
006 - Special computer methods
25
410 - Linguistics
16
658 - General management
13
400 - Language
11
005 - Computer programming, programs & data
10
900 - History & geography
10
511 - General principles of mathematics
9
330 - Economics
7
518 - Numerical analysis
4
621 - Applied physics
4
820 - English & Old English literatures
4
020 - Library & information sciences
3
519 - Probabilities & applied mathematics
3
610 - Medicine & health
3
800 - Literature & rhetoric
3
000 - Computer science, information & general works
2
010 - Bibliography
2
025 - Library operations
2
300 - Social sciences
2
301 - Sociology & anthropology
2
333 - Economics of land & energy
2
338 - Production
2
401 - Philosophy & theory
2
420 - English & Old English
2
500 - Natural sciences & mathematics
2
515 - Analysis
2
570 - Life sciences; biology
2
620 - Engineering & allied operations
2
700 - The arts; fine & decorative arts
2
780 - Music
2
003 - Systems
1
109 - Historical & collected persons treatment
1
121 - Epistemology
1
140 - Specific philosophical schools
1
160 - Logic
1
274 - History of Christianity in Europe
1
303 - Social processes
1
332 - Financial economics
1
370 - Education
1
380 - Commerce, communications & transportation
1
411 - Writing systems
1
413 - Dictionaries
1
418 - Standard usage & applied linguistics
1
423 - English dictionaries
1
495 - Languages of East & Southeast Asia
1
512 - Algebra
1
514 - Topology
1
572 - Biochemistry
1
580 - Plants (Botany)
1
more ...