http://book.klll.cc/ebooks/author/6174.opds?sort_order=downloads 2025-09-21T03:40:29Z Books by Pickering, Edward C. (Edward Charles) (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 2025-09-21T03:40:29Z https://book.klll.cc/ebooks/author/6174.opds?sort_order=title Sort Alphabetically by Title 2025-09-21T03:40:29Z https://book.klll.cc/ebooks/author/6174.opds?sort_order=release_date Sort by Release Date 2025-09-21T03:40:29Z https://en.wikipedia.org/wiki/Edward_Charles_Pickering See also: en.wikipedia 2025-09-21T03:40:29Z https://book.klll.cc/ebooks/59633.opds History of the Harvard College Observatory During the Period 1840-1890 Daniel W. Baker 2025-09-21T03:40:29Z https://book.klll.cc/ebooks/15636.opds The Future of Astronomy Edward C. Pickering 2025-09-21T03:40:29Z https://book.klll.cc/ebooks/35613.opds A Plan for Securing Observations of the Variable Stars Edward C. Pickering