They're not. IA is mostly full-color scans of old library books. I've never come across an IA scan on Libgen. Libgen is mostly EPUB's, native PDF's, and the o

They're not. IA is mostly full-color scans of old library books. I've never come across an IA scan on Libgen. Libgen is mostly EPUB's, native PDF's, and the occasional black-and-white high-contrast PDF scan.