Petroleum 10 : Any naturally occurring hydrocarbon or mixture of hydrocarbons in a gaseous or liquid state and which may contain hydrogen sulphide, nitrogen, helium, and carbon dioxide. See also: Liquefied Petroleum Gas
Peter Koob (Compiler & Typesetter, Tasmania State Emergency Service), Emergency Management Australia (Ed & Pub), Australian Emergency Management Glossary (Australian Emergency Manuals Series Part I: The Fundamentals, Manual 3), ISBN0642476152, Tasmania, Australian 1998. http://www.em.gov.au/Documents/Manual03-AEMGlossar y.PDF, (Emr Mgt/ ND and Other Dzstr - Brit) {53}