http://book.klll.cc/ebooks/subject/4757.opds 2025-08-15T21:49:26Z Books about Manual work (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 2025-08-15T21:49:26Z https://book.klll.cc/ebooks/24367.opds Begriff der Arbeitsschule (German) Georg Kerschensteiner