http://www.gutenberg.org/ebooks/author/54551.opds 2024-11-08T14:39:47Z Books by Polgár, Gyula (sorted by popularity) Free eBooks since 1971. Project Gutenberg https://www.gutenberg.org webmaster@gutenberg.org https://www.gutenberg.org/gutenberg/favicon.ico 25 1 2024-11-08T14:39:47Z https://sendtokindle.compellingsciencefiction.com/ebooks/author/54551.opds?sort_order=title Sort Alphabetically by Title 2024-11-08T14:39:47Z https://sendtokindle.compellingsciencefiction.com/ebooks/author/54551.opds?sort_order=release_date Sort by Release Date 2024-11-08T14:39:47Z https://sendtokindle.compellingsciencefiction.com/ebooks/67952.opds Kant-breviarium: Kant világnézete és életfelfogása (Hungarian) Immanuel Kant 2024-11-08T14:39:47Z https://sendtokindle.compellingsciencefiction.com/ebooks/68183.opds A világegyetem élete és megismerésének története a legrégibb időtől napjainkig (Hungarian) Svante Arrhenius