Classification
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306 - Culture & institutions
1
330 - Economics
1
338 - Production
1
518 - Numerical analysis
1
523 - Specific celestial bodies & phenomena
1
526 - Mathematical geography
1
534 - Sound & related vibrations
1
536 - Heat
1
542 - Techniques, equipment & materials
1
551 - Geology, hydrology & meteorology
1
579 - Microorganisms, fungi & algae
1
615 - Pharmacology & therapeutics
1
624 - Civil engineering
1
631 - Techniques, equipment & materials
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667 - Cleaning, color & coating technologies
1
668 - Technology of other organic products
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700 - The arts; fine & decorative arts
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720 - Architecture
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770 - Photography, photographs & computer art
1
781 - General principles & musical forms
1
791 - Public performances
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930 - History of ancient world to ca. 499
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