Passing variables to a permalink

Hello everyone

I don’t really know how to do this, if anyone out there can help me i would thank you very much.

Well i have a page wich i need to sent trough 2 variables let’s called ‘my_book_id’ and ‘library_book_id’.

And then on that page i would code something to do with the variables.
Well i know that since wordpress pages aren’t exactly html pages or php files..i can’t send variables throught url and then get them to use on the page with $_GET[‘my_book_id’].

How cand i implement this
http://www.mysite.com/show_page?my_book_id=1&library_book_id=12

I am using permalinks …. and on the definitions i have %postname%

Thanks in advance if anyone could help me to get this to work 🙂