Subject Indexing: Principles and Practices in the 90's: Proceedings of the IFLA Satellite Meeting Held in Lisbon, Portugal, 17–18 August 1993, and Sponsored by the IFLA Section on Classification and Indexing and the Instituto da Biblioteca Nacional e do Livro, Lisbon, Portugal. :181-212
Subject Indexing: Principles and Practices in the 90's: Proceedings of the IFLA Satellite Meeting Held in Lisbon, Portugal, 17–18 August 1993, and Sponsored by the IFLA Section on Classification and Indexing and the Instituto da Biblioteca Nacional e do Livro, Lisbon, Portugal. :215-230
Subject Indexing: Principles and Practices in the 90's: Proceedings of the IFLA Satellite Meeting Held in Lisbon, Portugal, 17–18 August 1993, and Sponsored by the IFLA Section on Classification and Indexing and the Instituto da Biblioteca Nacional e do Livro, Lisbon, Portugal. :166-180