The book "Heat Thermodynamics and Statistical Physics" by Brijlal covers a wide range of topics, including:
– University libraries almost always have multiple copies.
Phase space, micro/macroseates, and comparisons between Classical and Quantum Statistics (Bose-Einstein, Fermi-Dirac, and Planck’s Law).
The term has no connection to any legitimate PDF or standard textbook reference. This appears to be a spurious string—possibly a mis-copied filename from a warez site, a versioning code, a typo for “671 pages” (the book has ~700–750 pages in most editions), or a pirate download tag.