The Principles and Practice of Mine Ventilation by D. & J.S.Penman
1951. Second Edition, Revised. 355 pages. No dust jacket. Red cloth with gilt lettering. Black and white illustrations and pull-out illsutrations throughout. Slight cracking to hinges, with exposed netting, rear board is loose. Pages have light tanning and foxing throughout. Heavier to front pastedown and endpaper. Illustrations and pull-out illustrations are bright and clear, with some light tanning and foxing to edges. Stains and markings to some pages. Previous owner's inscription to front free endpaper. Boards have light shelf-wear with corner bumping. Light tanning to spine with crushing to spine ends. Wear marks overall. Gilt lettering is slightly darkened.