Cleopatra
Henry Rider Haggard
The Online World
Odd De Presno
Precalculus
Jay P. Abramson & Valeree Falduto & Rachael Gross (Mathematics teacher) & David Lippman & Rick Norwood & Melonie Rasmussen & Nicholas Belloit & Jean-Marie Magnier & Harold Whipple & Christina Fernandez
Foundation of Physics for Scientists and Engineers
Ali R. Fa
An Inquiry Into the Nature and Causes of the Wealth of Nations
Adam Smith
The Einstein Theory of Relativity
Hendrik Antoon Lorentz
Astronomy 2e
Andrew Fraknoi & David Morrison & Sidney Wolff