suggest me openGL api reefernce ebook

[infinus]

greetings all,
i am new to openGL. i am in need of opengl reference guide. online copy is available but i cannot access it al the time.
can any one link me pdf or chm file.....

feel free to mail me at
ashwini.dubey@hotmail.com

[ZbuffeR]

wget -r http://www.opengl.org/sdk/

[infinus]

thanks for ur contribution....
i just needed that.........