the National Library's ".au" domain collections, using a single interface in Trove which is publicly available. Content and services (extended) Description Trove has grown beyond its original aims, and has become "a community, a set of services, an aggregation of metadata, and a growing repository of full text digital resources" and "a platform on which new knowledge is being built". It is now a collaboration between the National Library, Australia's State and Territory libraries and hundreds of other cultural and research institutions around Australia. It is an Australian online library database aggregator; a free faceted-search engine hosted by the National Library of Australia, in partnership with content providers, including members of the National and State Libraries Australia (NSLA). Content and delivery Trove "brings together content from libraries, museums, archives, repositories and other research and collecting organisations big and small" in order to help users find and use resources relating to Australia and therefore the content is Australian-focused. Much of the material may be difficult to retrieve with other search tools, for example in cases where it is part of the deep web, including records held in collection databases, or in projects such as the PANDORA web archive, Australian Research Online, Australian National Bibliographic Database and others mentioned above. Since 2019, Trove has included access to all electronic documents deposited by Australian publishers under the legal deposit provisions of the Copyright Act 1968, as amended in 2017 to included such publications. These resources are identifiable by a display in the top right-hand corner in both the ebook and pdf viewers, saying "National edeposit collection". Many of these are readable and some are downloadable, depending on the access conditions. The site's content is split into "zones" designating different forms of content which can be searched all together, or separately. Books The book zone allows searching of the collective catalogues of institutions findable in Libraries Australia using the Australian National Bibliographic Database (ANBD). It provides access to books, audio books, e-books, theses, conference proceedings and pamphlets listed in ANBD, which is a union catalogue of items held in Australian libraries and a national bibliographic database of resources including Australian online publications. Bibliographic records from the ANBD are also uploaded into the WorldCat global union catalogue. The results can be filtered by format if searching for braille, audio books, theses or conference proceedings and also by decade and language of publication. A filter for