eTextbook
Guidotti, T.I. (Editor), Global Occupational Health Oxford University Press, Inc., 2011
http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195380002.001.0001/acprof-9780195380002
NIOSH Pocket Guide to Chemical Hazards
Online Search:
https://www.cdc.gov/niosh/npg/
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