My favoutite of the 5 books I have is the Brewmasters Bible by Stephen Snyder
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350 odd pages and great detail on all aspects of brewing, heaps of recipes to get you going. I use this book more than the rest put together.
I also have,
The Big Book of brewing
The home brewers recipe guide
the complete joy of homebrewing
brew ware
Also collins gem beer guide
and beer and cider in ireland