How many books about Tiffany Aching are in the Discworld series?
5
Q253295
entity
Discworld
Discworld
Q3401100
entity
Tiffany Aching
Tiffany Aching
Q1517543
The Wee Free Men
Q2342080
A Hat Full of Sky
Q2468631
Wintersmith
Q980558
I Shall Wear Midnight
Q19897982
The Shepherd's Crown