| 20910 | 17621 | E H Lewitt | Hydraulics and the mechanics of fluids | 1947 | E/36 | Lewitt |
| 20915 | 20955 | Lee Howl & Co | Pumps | 1931 | WCP | WCP |
| 20917 | 17513 | John Bowman | Water supply today | 1950 | E/32.2 | Bowman |
| 20921 | 17615 | Brian Jewell | Veteran scales and balances | 1978 | E/71.8 | Jewell |
| 20934 | 17619 | John Vince | Wells and water supply | 1978 | E/32.2 | Vince, |
| 20939 | 17616 | Hayward-Tyler & Co. Ltd | A practical guide for the water supply of towns, estates, villages, houses etc. for the use of architects, estate agents, district surveyors and prope\\ | 1921 | E/32.2 | Haywar |
| 20940 | 17618 | Southern Water | Southern way with water | 1981/2 | E/32.2 | Southe |
| 20946 | 17612 | Vinteng Publications | A pictorial review of barn engines | 1977 | E/17.7 | Vinten |
| 20947 | 17613 | The Electrical Development Association | Grain drying : a guide to the practical design of installations | 1961 | E/17.37 | E D A |
| 20948 | 17608 | Lynn White Jr | Medieval technology and social change | 1962 | E/65.4 | White, |
| 20952 | 21502 | Paul Lewis | The romance of water power | c1935 | E/34 | Lewis, |
| 20953 | 17630 | F Noel Taylor | Small water supplies : being a practical treatise on the methods of collecting, storing and sonveying water for domestic use in large country mansions\\ | 1911 | E/32.2 | Taylor |
| 20955 | 17614 | Mary Wedlake | Mary Wedlake's priced list of modern farming implements | 1850 | E/17.7 | Wedlak |
| 20957 | 17611 | Ministry of Agriculture and Fisheries | Threshing of grass, root and vegetable seed crops | 1946 | E/17.37 | M A F |
| 20958 | 17610 | Harold W Brace | History of seed crushing in Great Britain | 1960 | B/24.1 | Brace, |
| 20959 | 16721 | Thomas Robinson & Son Limited | Operation & maintenance instructions : waterwheel damper type PXm | | B/24.5 | Thomas |
| 20961 | 16685 | Jack Park | Simplified wind power systems for experimenters | 1975 | B/24.2 | Park, |
| 20969 | 21504 | Frederick T Day | An introduction to paper : its manufacture and use | 1962 | E/37 | Day, F |
| 20973 | 21524 | Norman R Rogers | The technology of woodwork and metalwork | 1936 | B/05.0 | Rogers |
| 20974 | 17431 | W R Seward | Young Farmers' Club Booklet No.16 : sheep farming | 1946 | E/17.33 | Seward |
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