Principles of Combustion in the Steam Boiler Furnace by Arthur Pratt
1950. No Edition Stated. 111 pages. Grey paperback with black lettering. Clean pages. Minimal tanning to endpapers and page edges. Some gutter cracking. Moderate wear to spine, cover edges and corners, with splitting to spine head. Notable tanning to spine and edges, with foxing, soiling and marking to covers.