LD50 14 : Lethal Dose Fifty. The lethal dose of a toxicant consumed orally or absorbed through the skin that is lethal to 50% of the exposed population, also known as median lethal dose
John R. Cashman, Emergency Response to Chemical and Biological Agents, Glossary, ISBN 1-56670-355-7, Lewis Publishers, CRC Press LLCU, USA 2000. https://books.google.com.kw/books?id=i0lCG8f_6T8C& pg=PA319&lpg=PA319&dq=Fog+%26+Mist+Emergencies+Glo ssary&source=bl&ots=65he7jtVb3&sig=eihli-g4gRSarGm f6usuIOCuksQ&hl=en&sa=X&ei=odQOVZWKDcv3auXvgKgD&ve d=0CDUQ6AEwBA#v=onepage&q=Fog%20%26%20Mist%20Emerg encies%20Glossary&f=false, (Chem&BiolEmr - Amer) {973}
Health and Safety Executive (HSE), HSE Acronyms and Abbreviations, HSE, Merseyside, England, UK 2012. www.hse.gov.uk/acronym/, (Hlth and Sfty - Brit) {716}