http://book.klll.cc/ebooks/subject/37563.opds 2025-08-07T23:51:44Z Books about Spherical astronomy (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 2025-08-07T23:51:44Z https://book.klll.cc/ebooks/67668.opds Hints to Travellers, Scientific and General, Vol. 2 Royal Geographical Society