It appears to be a PDF of the EPUB version. I have no idea what the Printed book version is like, but if it's like this then that is crazy.
Yeah, the content in this is just amazing, but I can't believe it would be this badly formatted to be honest. I hope the content owner sees this and can comment on it -- hopefully fix it, too.
The book is very old at this point, I would not expect any changes.
Finally, maybe look into using a reader that can reformat PDFs to make it more comfortable to read (I use a Sony Reader PRS650 as my physical ebook reader, and Foxit PDF on Windows)