Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
Max Verworn
Alejandro Lipschütz
Rudolf Virchow
August Büttner
F. W. Beneke
Freiherr von Justus Liebig
Oscar Hertwig
Ewald Hecker
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.