call_number
stringlengths
3
7
description
stringlengths
3
54
broader
stringclasses
110 values
narrower
sequencelengths
0
10
490
Other languages
490-499
[]
491
East Indo-European and Celtic languages
490-499
[]
492
Afro-Asiatic languages
490-499
[]
493
Non-Semitic Afro-Asiatic languages
490-499
[]
494
Altaic, Uralic, Hyperborean & Dravidian
490-499
[]
495
Languages of east and southeast Asia
490-499
[]
496
African languages
490-499
[]
497
North American native languages
490-499
[]
498
South American native languages
490-499
[]
499
Austronesian & other languages
490-499
[]
500
Natural sciences and mathematics
500-509
[]
501
Philosophy and theory
500-509
[]
502
Miscellany
500-509
[]
503
Dictionaries & encyclopedias
500-509
[]
504
[Unassigned]
500-509
[]
505
Serial publications
500-509
[]
506
Organizations and management
500-509
[]
507
Education, research, related topics
500-509
[]
508
Natural history
500-509
[]
509
History, geographic treatment, biography
500-509
[]
510
Mathematics
510-519
[]
511
General principles of mathematics
510-519
[]
512
Algebra
510-519
[]
513
Arithmetic
510-519
[]
514
Topology
510-519
[]
515
Analysis
510-519
[]
516
Geometry
510-519
[]
517
[Unassigned]
510-519
[]
518
Numerical analysis
510-519
[]
519
Probabilities and applied mathematics
510-519
[]
520
Astronomy and allied sciences
520-529
[]
521
Celestial mechanics
520-529
[]
522
Techniques, equipment & materials
520-529
[]
523
Specific celestial bodies and phenomena
520-529
[]
524
[Unassigned]
520-529
[]
525
Earth (Astronomical geography)
520-529
[]
526
Mathematical geography
520-529
[]
527
Celestial navigation
520-529
[]
528
Ephemerides
520-529
[]
529
Chronology
520-529
[]
530
Physics
530-539
[]
531
Classical mechanics
530-539
[]
532
Fluid mechanics
530-539
[]
533
Pneumatics (Gas mechanics)
530-539
[]
534
Sound and related vibrations
530-539
[]
535
Light and related radiation
530-539
[]
536
Heat
530-539
[]
537
Electricity and electronics
530-539
[]
538
Magnetism
530-539
[]
539
Modern physics
530-539
[]
540
Chemistry and allied sciences
540-549
[]
541
Physical chemistry
540-549
[]
542
Techniques, equipment & materials
540-549
[]
543
Analytical chemistry
540-549
[]
544
[Unassigned]
540-549
[]
545
[Unassigned]
540-549
[]
546
Inorganic chemistry
540-549
[]
547
Organic chemistry
540-549
[]
548
Crystallography
540-549
[]
549
Mineralogy
540-549
[]
550
Earth sciences
550-559
[]
551
Geology, hydrology, meteorology
550-559
[]
552
Petrology
550-559
[]
553
Economic geology
550-559
[]
554
Earth sciences of Europe
550-559
[]
555
Earth sciences of Asia
550-559
[]
556
Earth sciences of Africa
550-559
[]
557
Earth sciences of North America
550-559
[]
558
Earth sciences of South America
550-559
[]
559
Earth sciences of other areas
550-559
[]
560
Paleontology
560-569
[]
561
Paleobotany; fossil microorganisms
560-569
[]
562
Fossil invertebrates
560-569
[]
563
Fossil marine & seashore invertebrates
560-569
[]
564
Fossil Mollusca & Molluscoidea
560-569
[]
565
Fossil Arthropoda
560-569
[]
566
Fossil Chordata
560-569
[]
567
Fossil cold-blooded vertebrates
560-569
[]
568
Fossil Aves (birds)
560-569
[]
569
Fossil Mammalia
560-569
[]
570
Biology
570-579
[]
571
Physiology & related subjects
570-579
[]
572
Biochemistry
570-579
[]
573
Specific physiological systems in animals
570-579
[]
574
[Unassigned]
570-579
[]
575
Specific parts of & systems in plants
570-579
[]
576
Genetics and evolution
570-579
[]
577
Ecology
570-579
[]
578
Natural history of organisms
570-579
[]
579
Microorganisms, fungi & algae
570-579
[]
580
Plants
580-589
[]
581
Specific topics in natural history of plants
580-589
[]
582
Plants noted for characteristics & flowers
580-589
[]
583
Eudicots and Ceratophyllales
580-589
[]
584
Monocots, Chloranthales, magnoliids
580-589
[]
585
Pinophyta
580-589
[]
586
Cryptogamia
580-589
[]
587
Pteridophyta
580-589
[]
588
Bryophyta
580-589
[]
589
[Unassigned]
580-589
[]