Available under Creative Commons-ShareAlike 4.0 International License.
Below are the resources referred to or cited by the developer(s) of the original unit:
Harms-Ringdahl, L (2001) Safety Analysis: Principles and Practice in Occupational Safety, CRC Press.
US Departement of Labor (2002) Job Hazard Analysis, Occupational Safety and Health Administration, http://www.osha.gov/Publications/osha3071.pdf.
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