Science of Discworld is a 4-book series with 4 primary works first released in 1999 with contributions by Ian Stewart, Jack Cohen, and Terry Pratchett.
#1 of 4 in Science of Discworld
1999 • 60 Readers • 414 pages • 4.2
#2 of 4 in Science of Discworld
2015 • 41 Readers • 4.3
#3 of 4 in Science of Discworld
2005 • 36 Readers • 354 pages • 4.3
#4 of 4 in Science of Discworld
2013 • 30 Readers • 352 pages • 3.8