00877cam a22002411 4500 l 33000137 DLC 20260227111534.0 790710s1933 sz i100 0 eng c l 33000137 (OCoLC)5156202 U.S. Dept. of Labor. Library OCl DLC HD5119.G6 I5 1933c International Labour Office Methods of providing rest and alternation of shifts in automatic sheet-glass works. Third item on the agenda. Geneva, International labour office. 1933. 21, [1] p. 24 cm. At head of title: Questionnaire III. International labour conference. Eighteenth session, Geneva, 1934. Glass manufacture. Rest. Shift systems. International labor conference (18th : 1934 : Geneva) 36114 36114