Great Britain. Industrial Health Research Board., Great Britain. Department of Scientific and Industrial Research. Illumination Research Committee., Medical Research Council (Great Britain), & Adams, S. (1935). The effect of lighting on efficiency in rough work: (tile pressing). London: H.M. Stationery off. [printed by Eyre and Spottiswoode, limited].

Great Britain. Industrial Health Research Board., Great Britain. Department of Scientific and Industrial Research. Illumination Research Committee, Medical Research Council (Great Britain), and S. Adams. The Effect of Lighting On Efficiency in Rough Work: (tile Pressing). London: H.M. Stationery off. [printed by Eyre and Spottiswoode, limited], 1935.

Great Britain. Industrial Health Research Board., Great Britain. Department of Scientific and Industrial Research. Illumination Research Committee, Medical Research Council (Great Britain), and S. Adams. The Effect of Lighting On Efficiency in Rough Work: (tile Pressing). London: H.M. Stationery off. [printed by Eyre and Spottiswoode, limited], 1935.