00934cam a22002771 4500 l 35000029 DLC 20260227111535.0 800308s1935 sz 000 0 eng c l 35000029 (OCoLC)6062594 Library, U.S. Dept. of Labor NBuU DLC premarc HD4813 .I4 Ser. D, no. 21 International Labour Office. Hours of work in postal services. Geneva, 1935. 95 p. 24 cm. Studies and reports, Series D (Wages and hours of work) no. 21 At head of title: International Labour Office. Includes postal, telegraph and telephone undertakings. List of principal laws, regulations and agreements on which the study was based: p. [89]-95. Hours of labor. Postal service. Telegraphers. 36155 36155