Complete Book Series
The Complete Books of X were a series of splatbooks for Advanced Dungeons & Dragons, which expanded upon both classes and races in various ways, including cultural examination, new skills and new kits.
All of these books were released as part of the "Reference Series", a set of optional rulebooks aimed at expanding the campaign in various ways. Specifically, the Complete Books of X were considered their own sub-set, with the unique item reference number of PHBRX.
The Complete Fighter's Handbook
The Complete Thief's Handbook
The Complete Priest's Handbook
The Complete Wizard's Handbook
The Complete Psionics Handbook
The Complete Book of Dwarves
The Complete Bard's Handbook
The Complete Book of Elves
The Complete Book of Gnomes & Halflings
The Complete Book of Humanoids
The Complete Bard's Handbook
The Complete Bard's Handbook
The Complete Bard's Handbook
The Complete Bard's Handbook
The Complete Bard's Handbook
The Complete Book of Villains
Unlike the other books in the series, which were Player's Handbook Reference, this was part of the Dungeon Master's Reference sub-line, with the code of DMGR6.
The Complete Book of Necromancers
Unlike the other books in the series, which were Player's Handbook Reference, this was part of the Dungeon Master's Reference sub-line, with the code of DMGR7.