ISIRI 13142 is a standard published by the Institute of Standards and Industrial Research of Iran (ISIRI) in 2011 based on Directive 2009/76/EC. It defines "Driver-perceived noise level of wheeled agricultural or forestry tractors".
Other related sources are as follows:
- Publication 179,1st edition(1965) of International Electrotechnical Commission
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- "DIRECTIVE 2009/76/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL". Retrieved 2012-05-22.