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Linear Programming for Beginners is available now, at Lulu.com.
It is a big book. In case you don't like to carry heavy books around, it's also available for download, so you can read it on screen, or print only those pages you want.
Available for a limited time--10% discount. Use this discount code at checkout: BOOK10.
Available until May 1: free shipping. Use code FREEMAIL305 on checkout.