Hello, i'm posting concerning this dump http://redump.org/disc/2613/ specifically the second serial number "SLPS-91450".
Googling that serial only returns the game "Doukyu Re-Mix - Billiards Multiple [PSone Books]"
Sonyindex.com lists "WTC - World Touring Car Championship [PSone Books]" as serial number "SLPS-91488" and I would guess that is the correct one.
If there is a discrepancy or multiple serial numbers listed on a single game, it should be noted in the database.