cengage physics
optics and modern physics
http://shrinkybee.com/ZRJczQQ

cengage current electricity and magnetism

http://shrinkybee.com/owCCMJy

cengage electrostatics and current

http://shrinkybee.com/asn3B

cengage waves and thermo

http://shrinkybee.com/LvvkQ

cengage mechenics 2

http://shrinkybee.com/0bAW

cengage mechenics 1

http://shrinkybee.com/wpj2v