http://book.klll.cc/ebooks/subject/39962.opds?sort_order=downloads 2025-09-17T20:12:37Z Books about Freshwater biology (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 2025-09-17T20:12:37Z https://book.klll.cc/ebooks/subject/39962.opds?sort_order=title Sort Alphabetically by Title 2025-09-17T20:12:37Z https://book.klll.cc/ebooks/subject/39962.opds?sort_order=release_date Sort by Release Date 2025-09-17T20:12:37Z https://book.klll.cc/ebooks/72952.opds Die Tier- und Pflanzenwelt des Süsswassers. Zweiter Band. (German) Stephan Clessin, Arthur Seligo, Friedrich Zschokke, C. Apstein, Paul Kramer, E. Schmidt-Schwedt, and Friedrich Borcherding 2025-09-17T20:12:37Z https://book.klll.cc/ebooks/72951.opds Die Tier- und Pflanzenwelt des Süsswassers. Erster Band. (German) Wilhelm Weltner, Ludwig Plate, F. A. Forel, W. Migula, Friedrich Ludwig, August Gruber, and Julius Vosseler