Fay, J. W. J., & Ashford, J. R. (1961). A Survey of the Methods Developed in the National Coal Board's Pneumoconiosis Field Research for Correlating Environmental Exposure with Medical Condition.
Citación estilo ChicagoFay, J. W. J., and J. R. Ashford. A Survey of the Methods Developed in the National Coal Board's Pneumoconiosis Field Research for Correlating Environmental Exposure With Medical Condition. 1961.
Cita MLAFay, J. W. J., and J. R. Ashford. A Survey of the Methods Developed in the National Coal Board's Pneumoconiosis Field Research for Correlating Environmental Exposure With Medical Condition. 1961.
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