Ex library (British Government Ministry of Works), with label to front paste down and stamp to front board and here and there elsewhere. Blue-gray boards, 175 pages, 23 papers. Topics covered include (to give a random sample): dust in the cotton industry, the dust problem in the photographic industry, ignition of dust clouds and advances in the study and treatment of silicosis. Quarto. Condition: Board dulled and with some bumping and rubbing, age toning to pages, otherwise a clean, sound copy.