I was surfing the electronic library and found a history of beer, civilization to civilization, that is also fairly scientific with regard to the chemistry and bio-chemistry of beer components. Most here know a lot of the basics of history of beer, but this is a timeline with reference to each culture.
Start here, and advance thru time with the 3 main parts,
History of beer
use 'next' at top center to page
the middle ages'
This is excellent, too.
This sitemap has tons of info for elemental and compound food (and beer) contents and the effects on the body and each other.