Evaluating the Catalog Database of the National Central Library Using Trade Bibliographies

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Using three existing trade bibliographies, the catalog database of the National Central Library was evaluated. A total of 8,901 books sampled are used as the basis for the measurement. Results indicate about 70% coverage for the in print books, 80% coverage for the books published in 1993, and 40% coverage for the books published in 1994. The coverage analysis according to time lag ranged from 18% to 54%. In the subjects of generalities and linguistics. low coverage was found consistently. Areas for future research are briefly examined.