21. Universal Decimal Classification. English full edition. Communications. Transport. Metrology. Weights and measures. (30th June 1971) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (14 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
22. Universal Decimal Classification. English full edition. Earth sciences. Geology. Geophysics (31st March 1982) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (98 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
23. Universal Decimal Classification. English full edition. Economics (31st October 1985) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (122 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
24. Universal Decimal Classification. English full edition. Education. Teaching. Training. Leisure (30th June 1975) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (48 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
25. Universal Decimal Classification. English full edition. Electrical engineering (30th November 1989) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (122 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
26. Universal Decimal Classification. English full edition. Engineering, technology in general. Characteristics and details of machines, equipment, plant, processes and products Part 9], (28th February 1986) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (62 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
27. Universal Decimal Classification. English full edition. Ethnology. Ethnography (27th March 1970) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (16 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
28. Universal Decimal Classification. English full edition. Exact sciences in general. Nature study. Conservation. Environmental sciences (29th July 1983) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (22 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
29. Universal Decimal Classification. English full edition. Explosives. Fuels (29th July 1983) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (48 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
30. Universal Decimal Classification. English full edition. Fancy goods. Toys. Hobbies (31st January 1980) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (20 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗