Elliott, G.H.
Claculating sizes of high and low pressure gas mains and services, water and steam mains etc. simplified - Gloucester Blackfriars Press 1935 - 84 p., ill.
696.2 / E4
Claculating sizes of high and low pressure gas mains and services, water and steam mains etc. simplified - Gloucester Blackfriars Press 1935 - 84 p., ill.
696.2 / E4