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D D Reid
Medical Field Surveys in Industry and the Services in Relatio
Occupational and Domiciliary Factors in Pulmonary Tubercu
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acid amount animals answer appears applied asked beryllium body carried cent changes comfort compounds considered continued determine developed difficult DISCUSSION disease dust effects efficiency examined example experimental experiments exposure fact factory field figures fluorine follow give given heat human important incidence increased individual industry interest laboratory less limit lungs machine means measure Medical Research methods movement nature normal observers obtained occupational occur officers operator output particular performance period persons pits pneumoconiosis population possible practical present problem processes produce Professor questions reading reason records relatively Research salt sample scale selected showed shown sickness simple skin speed standard statistical subjects suggested survey sweat taken task temperature tests toxicity tuberculosis ulcer Unit workers X-ray