In the debate on classification schemes there are, essentially, two conflicting groups, those who hold by the UDC system and those who do not. The latter group is on the whole, critical, not only of UDC but of hierarchical universal schemes in general.
WAHLIN, E. (1963), "PRINCIPLES FOR A UNIVERSAL SYSTEM OF CLASSIFICATION BASED ON CERTAIN FUNDAMENTAL CONCEPTS AND AN OUTLINE OF A VARIANT ADAPTED TO TECHNOLOGY", Journal of Documentation, Vol. 19 No. 4, pp. 173-186. https://doi.org/10.1108/eb026334Download as .RIS
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