http://book.klll.cc/ebooks/subject/29962.opds?sort_order=title 2025-09-21T15:18:04Z Books about Celsus (Platonic philosopher), active 180 (sorted alphabetically) Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-09-21T15:18:04Z https://book.klll.cc/ebooks/subject/29962.opds?sort_order=release_date Sort by Release Date 2025-09-21T15:18:04Z https://book.klll.cc/ebooks/subject/29962.opds?sort_order=downloads Sort by Popularity 2025-09-21T15:18:04Z https://book.klll.cc/ebooks/52032.opds Dissertation on the Books of Origen against Celsus Francis Cunningham 2025-09-21T15:18:04Z https://book.klll.cc/ebooks/70561.opds writings of Origen, Vol. 1 (of 2) Origen 2025-09-21T15:18:04Z https://book.klll.cc/ebooks/70693.opds writings of Origen, Vol. 2 (of 2) Origen