| Reference text: |
World Meteorological Organization (WMO). Guide to Meteorological Instruments and Methods of Observation, Section 11 [online]. 7th ed. Geneva: WMO, 2008 as modified June 2010 [cited 24 November 2010]. Available from World Wide Web: <http://www.wmo.int/pages/prog/www/IMOP/publications/CIMO-Guide/CIMO_Guide-7th_Edition-2008.html>. Publication no. 8. ISBN 9789263100085. |
