| hasDefinition | Description of sources that have been used for the process. Data may be from primary sources, e.g. measurements on site, personal communication, oral or in writing, or questionnaires, or from secondary (previously published) sources, such as databases, journals, reports or books. In both cases, detailed information on the sources may allow the user of the data to judge the quality of the data and, if desired, to retrieve and check the original sources. For example for horizontal averages describing a type of industrial process, data may have been gathered from a number of sites. |
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