It's shorthand for Cumulative Working Level Months. The amount of exposure to radon working levels expressed as total months working level.
23:22, 26 November 2012
Absorbed through the leaves of the plant, and ...
A compilation of information required under the OSHA ...
A machine that sorts organic from inorganic matter for ...
MSDS: Material safety data sheet (MSDS) is a form ...
Potash is the only source of potassium fertilizer; there ...
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