Course Textbook APA Citation:

Plog, B. A., & Quinlan, P. (2012). Fundamentals of industrial hygiene (6th ed.). Itasca, IL: National Safety Council.


Unit 1 Essay #1. 

Consider and describe how an industrial hygienist uses an occupational exposure limit such as the threshold limit value (TLV) to determine if a worker’s exposure is at an acceptable level or not.

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