Classification
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380 - Commerce, communications & transportation
543
384 - Communications; telecommunication
12
394 - General customs
1
398 - Folklore
4
400 - Language
61
410 - Linguistics
28
414 - Phonology & phonetics
67
500 - Natural sciences & mathematics
279
509 - Historical, geographic & persons treatment
1
510 - Mathematics
1
519 - Probabilities & applied mathematics
13
520 - Astronomy & allied sciences
8
530 - Physics
41
540 - Chemistry & allied sciences
225
550 - Earth sciences
5
551 - Geology, hydrology & meteorology
123
570 - Life sciences; biology
1
571 - Physiology & related subjects
1
572 - Biochemistry
1
576 - Genetics & evolution
199
580 - Plants (Botany)
530
581 - Specific topics in natural history
100
590 - Animals (Zoology)
12
600 - Technology
876
602 - Miscellany
1
610 - Medicine & health
611 - Human anatomy, cytology & histology
1
612 - Human physiology
278
613 - Personal health & safety
10
614 - Incidence & prevention of disease
12
615 - Pharmacology & therapeutics
183
616 - Diseases
51
617 - Surgery & related medical specialties
2
618 - Gynecology, obstetrics, pediatrics & geriatrics
29
620 - Engineering & allied operations
461
621 - Applied physics
4
629 - Other branches of engineering
5
630 - Agriculture & related technologies
183
650 - Management & auxiliary services
12
657 - Accounting
8
658 - General management
114
660 - Chemical engineering
2
700 - The arts; fine & decorative arts
1,442
720 - Architecture
51
745 - Decorative arts
4
770 - Photography, photographs & computer art
7
780 - Music
25
791 - Public performances
16
800 - Literature & rhetoric
95
809 - History, description & criticism
1
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