A tome of that sort, packed with primary sources must be an absolute treasure trove, but one used mainly for reference, I'd imagine.
Enjoy.
I think it should be used as a reference, but knowing myself... I'll read it cover to cover. I am still working on the 50+ volumes from the DoS on the Nixon era... (I am halfway through volume 2). It's truly fascinating stuff (and online, for free).
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In theory, you could use any book past 3-4 lb to bash someone's skull in, particularly near the temple or base where the bone easily fragments from the rest, and may injure brain tissue leading to massive hemorrhaging.
I think that's it's the shielding option that makes some book very different type of weapons than others...