Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
A. Tschirch
Johann Friedrich Dieffenbach
L. Löwenfeld
Katarina Botsky
C. J. Koning
Oscar A. H. Schmitz
Eugen Fröhner
Stephan Dirk
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.