https://github.com/pieroboseta/apocalypse

A 100% free curated collection of essential books and encyclopedias covering survival, medicine, science, history, geography, and more—knowledge to preserve, rebuild, and thrive in the aftermath of a global catastrophe.

apocalypse books educational emergency free free-pdf free-pdf-exploit guide knowledge language medical opensource recovery sciense survival survival-skills

Last synced: 21 Feb 2026