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- [5] THE CLASSIFIED CATALOG, BASIC PRINCIPLES AND PRACTICES - WITH A CODE FOR THE CONSTRUCTION AND MAINTENANCE OF THE CLASSIFIED CATALOG - SHERA,JH, EGAN,ME LIBRARY RESOURCES & TECHNICAL SERVICES, 1957, 1 (02): : 123 - 128
- [7] CLOSING OF CLASSIFIED CATALOG AT BOSTON-UNIVERSITY LIBRARY RESOURCES & TECHNICAL SERVICES, 1974, 18 (03): : 220 - 225