I picked up a print copy of this at a local used book store. It's pretty good.
All in all, it's a lot of content. Good original art, data, large pages with small text (not so good in the physical world, but for a PDF it's fine).
It does reference a bunch of material from other books (which I lack), but it's possible to run it through regardless.
I like it. It's simple, but has a lot of stuff. Plus, I'm a fan of Classic Traveller.