00824nam a22002411 4500 sa 68018068 DLC 20260227112708.0 980203s1964 ii 00010 eng sa 68018068 //r98 PL480:I-F-E-202 DLC DLC DLC RC963 .A227 no. 2 Chatterjee, S. K., 1922- Heart rate response in wearing a variety of industrial protective face masks, by S. K. Chatterjee. New Delhi, Chief Adviser, Factories, 1964. i, 20 p. 33 cm. Industrial Physiology Division. Report, no. 2 Heart beat. Breathing apparatus. Industrial hygiene. Bombay. Central Labour Institute. Industrial Physiology Division. Report, no. 2 88156 88156