http://book.klll.cc/ebooks/subject/36931.opds 2025-08-12T08:34:50Z Books about Scientists (sorted by popularity) Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-08-12T08:34:50Z https://book.klll.cc/ebooks/subject/36931.opds?sort_order=title Sort Alphabetically by Title 2025-08-12T08:34:50Z https://book.klll.cc/ebooks/subject/36931.opds?sort_order=release_date Sort by Release Date 2025-08-12T08:34:50Z https://book.klll.cc/ebooks/66373.opds Reglas y consejos sobre investigación científica (Spanish) Santiago Ramón y Cajal 2025-08-12T08:34:50Z https://book.klll.cc/ebooks/75811.opds Nagy tudósok (Hungarian) 100 downloads