00454nam a2200145 4500 712 712 191121b ||||| |||| 00| 0 eng d 662.6 H6779 H. M.S.O 233 The efficient use of Fuel: A Textbook on Fuels and their Efficient Utilization for the Use of Students and Technical Men in Industry 1st ed. London HMSO 1944 viii, 823 p. Fuel ddc BK 0 0 ddc 0 662_600000000000000_H6779 0 2800 CL CL 1952-10-10 662.6 H6779 00157 2019-11-21 1 BK