Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
Alexander von Humboldt
C. Semper
Friedrich Dannemann
Max B. Weinstein
Ernst Haeckel
Charles Darwin
Oswald Reissert
Georg Karl Cornelius Gerland
452 downloads
Friedrich Günther
Heinrich Hubert Kerp
430 downloads
418 downloads
Richard Andree
403 downloads
402 downloads
401 downloads
398 downloads
Franz Doflein
Max Geitel
These books are free to read. Each is in the public domain in the United States; check your own country's rules before you copy or share one.