| 20840 | 17596 | H W Dickinson | The garret workshop of James Watt | 1949 | E/51 | Watt/D |
| 20841 | 17595 | Louis C Hunter | Waterpower : a history of industrial power in the United States, 1780-1930. Volume One : waterpower in the century of the steam engine | 1979 | B/24.3 | USA/Hu |
| 20842 | 18005 | Michael R Lane | Baron Marks of Woolwich : international entrepreneur, engineer, patent agent and politician (1858-1938) | 1986 | E/51 | Marks/ |
| 20843 | 18006 | Ludwig H Heydenreich et al | Leonardo the inventor | 1981 | E/51 | Leonar |
| 20844 | 17990 | Electricity | Power to the people | 1981 | E/34 | Electr |
| 20845 | 17991 | Robert O'Brien | Machines | 1969 | E/34 | O'Brie |
| 20846 | 17995 | Asa Briggs | The power of steam : an illustrated history of the World's steam age | 1982 | E/34 | Briggs |
| 20847 | 17996 | J P H Stephens | The age of power | 1974 | E/34 | Stephe |
| 20848 | 17997 | Electricity | The Rance's tidal power station | | E/34 | Electr |
| 20850 | 17992 | F Sherwood Taylor | Power today and tomorrow : the application of energy to human needs | | E/34 | Taylor |
| 20856 | 17994 | Stefan A Szczelkun | Survival scrapbook : 5 : energy | 1973 | E/34 | Szczel |
| 20857 | 17998 | Hugh P Vowles | The quest for power from prehistoric times to the present day | 1931 | E/34 | Vowles |
| 20860 | 18003 | E G Sterland | Energy into power | 1967 | E/34 | Sterla |
| 20862 | 17605 | A E Tompkins | Turbines | 1921 | B/24.1 | Tompki |
| 20863 | 17628 | E W Golding | The generation of electricity by wind power | 1955 | E/34 | Goldin |
| 20864 | 17629 | Thomas Hart Ltd | Rope driving or the transmission of power by ropes | ? | E/34 | Hart, |
| 20865 | 17606 | Dermot McGuigan | Small scale water power | 1978 | B/24.3 | McGuig |
| 20866 | 17626 | Brian Home | Where the wind blows : an introduction to wind power | 1994 | E/34 | Home, |
| 20867 | 17625 | Jack Park | The wind power book | 1981 | E/34 | Park, |
| 20869 | 18004 | J C McVeigh | Sun power : an introduction to the applications of solar energy | 1977 | E/34 | McVeig |
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