BEL :- It consists of are assessment for overall exposure to chemicals that are presen in the workplace , through the measurement of appropriate determinante in bilogical specimens from the worker at specified times.

BEL :- It consists of are assessment for overall exposure to chemicals

1.	BEL :- It consists of are assessment for overall exposure to chemicals that are presen in the workplace , through the measurement of appropriate determinante in bilogical specimens from the worker at specified times.
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