For citations:
Sukiasyan E.R. The Structure of Library Classification Systems. Problems of the General Theory. Bibliotekovedenie [Russian Journal of Library Science]. 2012;(3):25-29. (In Russ.) https://doi.org/10.25281/0869-608X-2012-0-3-25-29
Sukiasyan E.R. The Structure of Library Classification Systems. Problems of the General Theory. Bibliotekovedenie [Russian Journal of Library Science]. 2012;(3):25-29. (In Russ.) https://doi.org/10.25281/0869-608X-2012-0-3-25-29