Editore: National Association of Stationary Engineers, 1917
Da: Second Edition Books, Butte, MT, U.S.A.
Soft cover. Condizione: Good -. A rare copy! Tight stapled binding. Gray wraps have mild wear and chipping, soiling to bottom and spine edges. Water staining along margins throughout, text unmarked. Black and white photos and line drawings correspond to the lantern slides. 64 pages.