a book about (hed)pe ...

I was searching for the new album preorder at amazon and found this:
http://www.amazon.co.uk/West-Coast-Hip-Groups-N-W/dp/1155839706/ref=sr_1_14?ie=UTF8&s=books&qid=1276811899&sr=8-14

As the title says, it's about west coast hiphop and includes Hed PE.
Unfortunately, there is very little info about it but it still sounds interesting, it's the first time I see Hed mentioned in a book.
(I have some nu-metal encyclopedia with a short paragraph about Hed but here they're mentioned in the title, wow)
It's also quite surprising, looking at the other artists which are pure hiphop, unlike Hed.