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The article is an interesting, practical and a logical presentation of an important issue and an outstanding contribution to the literature of technical services. The authors explore the impact of vendor records in the OCLC database on the day-to-day operations of cataloging units. Using a 1998 sample of Spanish language, firm-ordered materials, represented by vendor records in OCLC, the authors clearly and concisely address the differences between these records and full-level bibliographic records. Types of errors and error rates are analyzed, the resulting costs in cataloging time are calculated, and suggestions for improvement are offered.