Since the linked book is at archive.org: I noticed that it is part of the _Mir Titles_ collection there:
https://archive.org/details/mir-titles
IA's browser e-reader is pretty nice to use overall, and the Mir titles seem to have been converted into various downloadable formats as well, in addition to what I'm guessing is the native PDF.
Props to the collection maintainer. This brings back some really good memories.
Note--It seems like some additional Mir books, in various states of curation, may be accessible via IA through search: