Classification
579 - Microorganisms, fungi & algae
68
610 - Medicine & health
19
576 - Genetics & evolution
18
572 - Biochemistry
11
616 - Diseases
11
363 - Other social problems & services
9
600 - Technology
9
620 - Engineering & allied operations
9
570 - Life sciences; biology
7
580 - Plants (Botany)
7
333 - Economics of land & energy
6
571 - Physiology & related subjects
6
000 - Computer science, information & general works
5
551 - Geology, hydrology & meteorology
5
577 - Ecology
5
660 - Chemical engineering
5
700 - The arts; fine & decorative arts
5
140 - Specific philosophical schools
4
581 - Specific topics in natural history
4
578 - Natural history of organisms
3
628 - Sanitary & municipal engineering
3
500 - Natural sciences & mathematics
2
540 - Chemistry & allied sciences
2
599 - Mammals
2
611 - Human anatomy, cytology & histology
2
006 - Special computer methods
1
040 - [Unassigned]
1
304 - Factors affecting social behavior
1
330 - Economics
1
380 - Commerce, communications & transportation
1
547 - Organic chemistry
1
548 - Crystallography
1
550 - Earth sciences
1
590 - Animals (Zoology)
1
613 - Personal health & safety
1
614 - Incidence & prevention of disease
1
630 - Agriculture & related technologies
1
800 - Literature & rhetoric
1
900 - History & geography
1
910 - Geography & travel
1
930 - History of ancient world to ca. 499
1