Classification
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062 - Organizations in British Isles; in England
1
100 - Philosophy & psychology
1
321 - Systems of governments & states
1
331 - Labor economics
1
380 - Commerce, communications & transportation
1
510 - Mathematics
1
526 - Mathematical geography
1
535 - Light & infrared & ultraviolet phenomena
1
549 - Mineralogy
1
550 - Earth sciences
1
553 - Economic geology
1
571 - Physiology & related subjects
1
580 - Plants (Botany)
1
601 - Philosophy & theory
1
607 - Education, research & related topics
1
627 - Hydraulic engineering
1
630 - Agriculture & related technologies
1
677 - Textiles
1
688 - Other final products & packaging
1
696 - Utilities
1
697 - Heating, ventilating & air-conditioning
1
700 - The arts; fine & decorative arts
1
910 - Geography & travel
1