Searching the collection
All Northern Ireland official publications since 1985 are listed in the OPAC. Publications before 1985 are listed on microfiche. Certain publications such as Statutory Rules, Bills & Acts and NIA papers (until 2009) are treated as serials and are not searchable by title or ISBN. The TSO annual catalogues or online catalogue should be used to identify the number of individual publications. Since 2009, when numbering of NIA papers ceased, these are now treated as monograph publications and are listed in the OPAC.
Since the decentralisation of official publishing, many departments and agencies publish independently of TSO, and so their publications may not be listed in TSO catalogues.
Items may be ordered in advance and may be reserved unless another reader requests the same item.