keyword: Science – 106 free books.
All these books are free to read: either they're distributed with a free license, or they're in the public domain.
These books are available in MOBI format - good for Kindle.
Aseem Sharma et al.
Amy Brown and Greg Wilson
Kieran Gallagher and Lizhi Fan
David J. Raymond
Cristina Capineri et al. (editors)