LEADER 00000nam 2200205 a 4500 001 0721453 003 UkHlHU 007 t 008 001011 2 1963 000 eng 040 UkHlHU 050 4 RC 773 E9 100 1 Evans, D.D. 245 12 A survey of the incidence and progression of pneumoconiosis related to the environmental conditions. 260 [Cardiff] :|bNational Union of Mineworkers (South Wales Area),|c1963. 300 48p. 710 2 National Union of Mineworkers. South Wales Area.
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