| 20885 | 17988 | Nigel Dudley | Energy | 1981 | E/34 | Dudley |
| 20886 | 17989 | A R Ubbelohde | Man and energy | 1963 | E/34 | Ubbelo |
| 20887 | 17623 | Heinz Kurth | Wind power | 1978 | E/34 | Kurth, |
| 20888 | 17607 | Francis Haveron | "The Brilliant Ray" or "How the Electric Light was brought to Godalming in 1881" | 1981 | E/32.1 | Havero |
| 20889 | 17609 | Dermot McGuigan | Small scale wind power | 1978 | E/34 | McGuig |
| 20891 | 17627 | Palmer Cosslett Putnam | Power from the wind | 1948 | B/24.6 | Putnam |
| 20892 | 17993 | Paul McClory | Focus on alternative energy | 1985 | E/34 | McClor |
| 20893 | 17999 | Mark Lambert | Future sources of energy | 1986 | E/34 | Lamber |
| 20894 | 18002 | Ronald Alves and Charles Milligan | Living with energy | 1978 | E/34 | Alves, |
| 20895 | 18001 | edited by Lloyd Lindo | Power and energy | 1984 | E/34 | Lindo, |
| 20900 | 17624 | Tom Kovarik et al | Wind energy : the generation, storage and conversion of wind power for practical use today. | 1979 | B/24.6 | Kovari |
| 20901 | 18000 | Jack Bainbridge | Power | 1977 | E/34 | Bainbr |
| 20902 | 17604 | D J O Brandt | The manufacture of iron and steel | 1960 | E/36.1 | Brandt |
| 20904 | 20921 | Lindley | Illustrated catalogue : C. Lindley & Co | 1928 | E/37 | Lindle |
| 20905 | 17620 | David Allan Low | A manual of machine drawing and design | 1893 | E/36.0 | Low, D |
| 20906 | 17622 | The Southern Lime Association | The uses of lime in building | ? | B/05.7 | Southe |
| 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 |
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