# Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services, Division 3.3.3: FAO Prime (FAOPrimeValue)

Extent: E+W+S+N.I.

A prime and double prime may be used to connotate the master horizon symbol of the lower of two (prime) or three (double prime) horizons having identical Arabic-numeral prefixes and letter combinations.
The allowed values for this code list comprise only the values specified in Guidelines for soil description, 4 th edition , Food and Agriculture Organization of the United Nations, Rome, 2006, pp. 67-77.

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Source: https://www.legislation.gov.uk/eur/2010/1089/annex/IV/division/3/division/3.3/division/3.3.3 (the official version)
Page: https://openlegislation.uk/eu-regulation-2010-1089/annex-IV/division-3/division-3.3/division-3.3.3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.