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"National Digital Library of India (NDL India) is an all-digital library that stores information (metadata) about different types of digital contents including books, articles, videos, audios, thesis and other educational materials relevant for users from varying educational levels and capabilities. It provides a single-window search facility to access digital contents currently existing in India as well as other digital sources under a single umbrella. "--About page.
A union catalog of all books in English in eight British and U.S. Libraries (British Library, Bodleian Library, Cambridge University Library, National Library of Scotland, Trinity College (Dublin), Newcastle University Library, Harvard University Library, and the Library of Congress). Indexed by author, title, subject, series, publisher, place of publication, country, date, language, location, classification and reference number.