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OAIster is a searchable online catalog of digital resources, including digitized (i.e., scanned) books and articles, born-digital texts, audio files (e.g., wav, mp3), images (e.g., tiff, gif), movies...more info
This site features a wide selection of e-books that have been contributed from publishers, universities, and individuals. Most of the texts are in DJVU or PDF format. Free to read, download, and...more info
InfoBase is the Optical Society of America's online repository of both current and past volumes of all its journals (citations only, no full-text). It also contains recent proceedings from OSA...more info