ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] There has been a pressing need to revise standards for permitted concentrations of dust in the atmosphere of coal mines. The National Coal Board's Pneumoconiosis Field Research, based on regular medical surveys of miners, began in 1952 and has led to the recommendation that there should be no ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/227445a0
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