For less valuable works, there is another option. Various
types of
binding are available at copy shops. A while ago I bought a copy of Guido Bruck's book on [insert
auction site here] and it turned out to be a photocopy, which just fell out of its
cheap binding. I made a
good photocopy of the photocopy and comb bound it at
work. Clear plastic sheets serve as covers. You can also bind in copies of articles, as I did here.
You can also get spiral bindings and permanently glued bindings.
This comb-bound book is A4 size and you can not only open it flat, but fold it right round without any damage.
Bill