Ex-library, with markings to spine, front cover and title page. Grey-green card covers, 175 pages, i;llustrated with tables, diagrams and photographs. With summaries of Safety Reulations in German (as at 1st April 1934), Great Britan (Factories Act 1937) and USA (as approved 1st September 1943). Condition: Library treatemnts as summarised above and occasional stamp to margin, covers faded, text block a little bumped. No readers’ marks.