Found 24 books 
[en] CK-12 Life Science for Middle School CK-12 Foundation
[en] CK-12 Life Science CK-12 Foundation
[en] CK-12 Earth Science for Middle School CK-12 Foundation
[en] CK-12 Earth Science for High School McGraw-Hill Science/Engineering/Math
[en] CK-12 Earth Science CK-12 Foundation
[en] CK-12 Basic Geometry, Volume 2 of 2 CK-12 Foundation
[en] CK-12 Geometry · 2nd Edition, Volume 2 of 2 CK-12 Foundation
[en] CK-12 Geometry CK-12 Foundation
[en] CK-12 Chemistry
[en] CK-12 Basic Algebra, Volume 1 CK-12 Foundation (April 19, 2012)
[en] CK-12 Algebra I CK-12 Foundation
[mg] CK-12 Basic Algebra, Volume 2 CK-12 Foundation
[en] CK-12 People's Physics Book Version 2 CK-12 Foundation
[en] CK-12 People's Physics Book Version 3 (With Videos) CK-12 Foundation
[en] CK-12 Advanced Probability and Statistics CK-12 Foundation
[en] CK-12 Engineering · an Introduction for High School CK-12 Foundation
[en] CK-12 Chemistry - Second Edition CK-12 Foundation
[en] CK-12 Probability and Statistics - Basic (A Full Course) CK-12 Foundation
[en] Pwning Tomorrow · Short Fiction from the Electronic Frontier Electronic Frontier Foundation