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pro vyhledávání: '"Swecker S"'
Publikováno v:
Archives of environmental health. 32(5)
The United States Public Health Service examined 1,438 surface coal miners to determine the prevalence of coal worker's pneumoconiosis (CWP), chronic bronchitis, and ventilatory impairment among them. Four percent (fifty-nine individuals) showed some
Publikováno v:
Archives of environmental health [Arch Environ Health] 1974 Aug; Vol. 29 (2), pp. 67-72.
Publikováno v:
Archives of environmental health [Arch Environ Health] 1977 Sep-Oct; Vol. 32 (5), pp. 211-5.