One of the most common errors in cataloging library materials involves miscoding of the nonfiling indicator of title fields. This article notes the extent of the problem and its negative effect on searching in the library's on-line catalog and surveys how librarians have approached solutions to the problem. The article describes how the major library automation systems address this problem.
Ballard, T. (1997). Improve OPAC searching by reducing tagging errors in MARC records. Library software review, 16(3), 152-155.