The Universal Decimal Classification : present position and future developments / Barbara Kyle and B.C. Vickery. Unesco bulletin for libraries. Kyle, Barbara Ruth Fuessli. Vickery, B. C. (Brian Campbell) Unesco. Classification, Universal decimal. 025.4 KYU "Reprinted from the 'Unesco bulletin for libraries', vol.15, no.2, March-April 1961 (items 96 and 181)". Includes bibliographical references. Paris : UNESCO, 1961. 1961. 1961 Text 34 p. ; eng