That book you spent some time searching for in the dusty boxes in the garage (on the hottest day of the year) isn't there either.
Corollary 1: That book you were thinking of buying - don't - you already own it.
Corollary 2: See above.
Upside: You know all those ridiculous Greiner-Mueller books you bought but never read? The one on thermo actually has a good explanation of the very point you were mystified about. My apologies Prof's G and M.