Online Texbooks Publishing Software, written in PHP?

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Hi everyone!

I have been asked to publish medical textbooks and notes of my collage
online, on the website.

It's difficult to publish huge textbooks as html or text files on the
web, so I'm searching the web for a free php script that is "designated
to publish ebooks online" just like . Other Content Management
Systems such as have news, content and knowledge-base
features which are not exactly my demand.

Please note that I prefer NOT to use wiki-based or edit-by-everyone

If anyone knows some links or ideas I will be thankful.

Thanks in advance.

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