Classification
616 - Diseases
36
330 - Economics
30
900 - History & geography
19
617 - Surgery & related medical specialties
17
800 - Literature & rhetoric
16
320 - Political science
10
610 - Medicine & health
10
809 - History, description & criticism
9
808 - Rhetoric & collections of literature
7
331 - Labor economics
6
570 - Life sciences; biology
5
006 - Special computer methods
4
304 - Factors affecting social behavior
4
306 - Culture & institutions
4
332 - Financial economics
4
340 - Law
4
400 - Language
4
551 - Geology, hydrology & meteorology
4
620 - Engineering & allied operations
4
261 - Social theology
3
571 - Physiology & related subjects
3
577 - Ecology
3
630 - Agriculture & related technologies
3
100 - Philosophy & psychology
2
155 - Differential & developmental psychology
2
200 - Religion
2
301 - Sociology & anthropology
2
305 - Social groups
2
338 - Production
2
370 - Education
2
510 - Mathematics
2
519 - Probabilities & applied mathematics
2
572 - Biochemistry
2
576 - Genetics & evolution
2
580 - Plants (Botany)
2
600 - Technology
2
615 - Pharmacology & therapeutics
2
658 - General management
2
700 - The arts; fine & decorative arts
2
780 - Music
2
930 - History of ancient world to ca. 499
2
004 - Data processing & computer science
1
005 - Computer programming, programs & data
1
010 - Bibliography
1
025 - Library operations
1
027 - General libraries
1
050 - General serial publications
1
120 - Epistemology, causation & humankind
1
140 - Specific philosophical schools
1
149 - Other philosophical systems
1
more ...