The Association of Petrochemicals Producers in Europe (APPE), The European petrochemical industry, Glossary of Terms on Chemical Safety for Use in IPCS Publications, van Nieuwenhuyse, Brussels 2006. http://www.petrochemistry.eu/glossary.html, (Petrochem Ind - Brit) {473}
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}