Audiogram 3 : A record of hearing loss of hearing level measured at several different frequencies, usually 500 to 6,000 Hz. An OSH glossary used in safety and health at work which is, adopted by ILO
International Occupational Safety and Health Information Centre (CIS), A review of: Occupational Safety and Health Glossary: Words and Expressions Used in Safety and Health at Work, Adopted by International Labour Organization ILO, Geneva 1993, ISBN 92-9016-002-0. http://www.ilo.org/wcmsp5/groups/public/---ed_prot ect/---protrav/---safework/documents/publication/w cms_113126.pdf, http://www.ispesl.it/cis/ext/html/gloss.htm#Z1, (Int Occupn Sfty and Hlth/ ILO - Amer) {102}