A library chooses its cataloguing practice, depending on the environment where it operates. Some experience with and dilemmas about the use of the COMARC format are described as seen by cataloguers in a public library while solving their everyday practical cataloguing problems.
The article describes the process of library automation in the Bulgarian National Library and the conversion of the records in their databases into the COMARC format and lists the reasons why COBISS software was chosen by the National Library of Bulgaria and other Bulgarian libraries. It also mentions the need to expand the COMARC format due to countries with different cataloguing practices participating in the COBISS.Net project.
Library catalogues allow users searching of library materials in different ways. To achieve successful and efficient searching, bibliographic and authority records should be created according to cataloguing rules, besides perfect and accurate records are required. That is why, cataloguers are responsible for an adequate quality of records and the quality control should be regularly examined.