Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
Walter Libby
Marie Curie
Carl R. Maag and Steve Rohrer
United States. Arms Control and Disarmament Agency
Lucien Poincaré
Ernest Rutherford
Walter E. Kisieleski and Renato Baserga
Henry Faul
Edward Teller and Albert L. Latter
F. P. Venable
Neal O. Hines
Gustave Le Bon
Pierre Curie
George O. Smith
Hermann Sieveking
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.