Dyfyniad APA

Attfield, M. D. (1992). British data on coal miners' pneumoconiosis and relevance to US conditions.

Dyfyniad Arddull Chicago

Attfield, M D. British Data On Coal Miners' Pneumoconiosis and Relevance to US Conditions. 1992.

Dyfyniad MLA

Attfield, M D. British Data On Coal Miners' Pneumoconiosis and Relevance to US Conditions. 1992.

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