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Encyclopedia :
4 :
4- :
4-D :
4-digit UNESCO Nomenclature |
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4-digit UNESCO NomenclatureUNESCO Nomenclature (more properly UNESCO nomenclature for fields of science and technology) is a system developed by UNESCO for classification of research papers and doctoral dissertations. There are three versions of the system, offering different levels of refinement through 2-, 4-, and 6-digit codes. This article describes the 4-digit nomenclature.4-digit nomenclatureSee also
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