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https://internationalbadassactivists.org/2019/06/12/leonardo-da-vincis-huge-notebook-collections-the-codex-forster-now-digitized-in-high-resolution-explore-them-online-open-culture/
Leonardo da Vinci's Huge Notebook Collections, the Codex Forster, Now Digitized in High-Resolution: Explore Them Online | Open Culture