Canadian Centre for Occupational Health and Safety CCOHS, Material Safety Data Sheet MSDS - An Explanation of Common Terms, Ontario, Canada 1988 (Revised 1996). http://ccinfoweb.ccohs.ca/help/msds/msdstermse.htm l, (Common MSDS Terms Used in Occupn Hlth and Sfty - Canad) {20}
Canadian Centre for Occupational Health and Safety CCOHS, Chemicals & Materials Safety Data Sheet MSDS - An Explanation of Common Terms, Ontario, Canada 2013. http://www.ccohs.ca/oshanswers/chemicals/glossary/ msds_gloss_a.html, (Common MSDS Terms Used in Occupn Hlth and Sfty - Canad) {630}