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British Medical Journal|June 27, 1970
Long-term and short-term effects of oral prethcamide in chronic ventilatory failureR A Brewis, N G Hodges
British Journal of Industrial Medicine|August 1, 1986
Mortality of slate workers in north WalesP D Oldham, C Bevan, P C Elwood, et al.
Occupational Medicine (Oxford, England)|November 7, 2016
Chronic obstructive pulmonary disease in Welsh slate minersC J Reynolds, S J MacNeill, J Williams, et al.
British Journal of Industrial Medicine|May 1, 1980
Effects of exposure to slate dust in North WalesJ R Glover, C Bevan, J E Cotes, et al.
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