I can tell you how it works. This is an infringement, and by posting it, you are assisting in the infringement.
Oh the SHAME of being involved in such nefarious criminal activity! Please don't send the cops to come get me, they may uncover my sinister ring of illegal jaywalkers and that cutting I made that one time of a copyrighted CrEpe Myrtle!
I was saying I don't know how the copyright laws work in regards to the site where this book was posted- is it a foreign website? Is the person who posted it foreign? If so, how do OUR laws affect people in the country where the website is based and/ or the country where the individual who posted it lives... Nobody here knows where, so it is virtually impossible to intelligently discuss the legality of his posting this book. Again, I sincerely doubt that a 35 year old book being scanned into a website is going to catch a second look from anybody who prosecutes for these types of things... Even if it did, how do you know I didn't post this in the hopes that it would draw attention that would eventually lead to this item being removed and the micrient responsible being thrown into the deepest darkest dungeon imaginable?
Regardless- since nobody here posts it, nobody here asked him to post it and nobody here is John Naka... Why not simply take advantage of what the INTERNET WAS MADE FOR- the FREE GLOBAL exchange of information. Crappy copies like this are useful as nothing more than a preview of a good book and are generally more likely to lead someone to PURCHASE a hard copy of the book than it is to discourage someone from purchasing it in my experience. What is the difference between this and borrowi the book from a friend, reading it and returning it to them? Oh, the friend purchased the book right? Did this guy not most likely purchase the book? Yeah, he probably did....
The funniest thing about this to me is- the copy I once had of this book was bought for me from a book sale at an old library years ago. The copy as I received it was just that- A COPY. It was comprised of a bunch of photocopied pages bundled together in a ring binder! It was subsequently destroyed by my roommates' dog, so I think it is pretty cool to find a copy online we can all look at! If y'all want to argue the legality of someone posting this, go right ahead... It just made me smile to see someone took the time to honor it by spending hours scaning it into his website.