00700cam a22002291 4500 l 35000009 DLC 20260227111535.0 770714s1934 xx 000 0 eng c l 35000009 (OCoLC)3115597 Library, U. S. Dept. of Labor OC DLC HD6331 .B76 Brown, Alfred Barratt, 1887- The machine and the worker, by A. Barratt Brown. London, Ivor Nicholson and Watson, limited, 1934. 4 p. l., [5]-215 p. 19 cm. The University extension library Machinery in the workplace. Work. Industrial efficiency. 36145 36145