Classification
770 - Photography, photographs & computer art
3
771 - Techniques, equipment & materials
3
006 - Special computer methods
2
515 - Analysis
2
519 - Probabilities & applied mathematics
2
620 - Engineering & allied operations
2
003 - Systems
1
005 - Computer programming, programs & data
1
181 - Eastern philosophy
1
300 - Social sciences
1
301 - Sociology & anthropology
1
331 - Labor economics
1
510 - Mathematics
1
512 - Algebra
1
535 - Light & infrared & ultraviolet phenomena
1
541 - Physical chemistry
1
581 - Specific topics in natural history
1
681 - Precision instruments & other devices
1
940 - History of Europe
1