A project towards a universal library. By this art you may contemplate the variation of the 23 letters.

Library Genesis is a scientific community targeting collection of books on natural science disciplines and engineering. https://libgen.gs/ https://libgen.lc/ https://libgen.li/

CAS Source Index (CASSI) Look Up Tool

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Search through 28M books from the OpenLibrary database (from Internet Archive) with Typesense

OneSearch: Find and get resources from libraries, archives and museums in Singapore. Books, eJournals, images, AV material, records and papers, physical objects and more from One Search by National Library Board NLB.

A powerful, streamlined new Astrophysics Data System

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ProQuest powers research in academic, corporate, government, public and school libraries around the world with unique content. Explore millions of resources from scholarly journals, books, newspapers, videos and more.

DOAJ is a community-curated online directory that indexes and provides access to high quality, open access, peer-reviewed journals.

JSTOR is a digital library of academic journals, books, and primary sources.

EBSCO is the leading provider of research databases, e-journals, magazine subscriptions, ebooks and discovery service for academic libraries, public libraries, corporations, schools, government and medical institutions

Find what you want in a library near you with WorldCat, a global catalog of library collections.

Discover impactful Journals, Books & Case Studies from Emerald Publishing on Emerald Insight.