The Coming of the Quantum Cats has 243 pages.
The Quantum Universe has 272 pages.
The Quantum Rose has 382 pages.
A Quantum Murder has 384 pages.
The Quantum Prophecy has 264 pages.
Quantum Theology has 256 pages.
Quantum Psychology has 208 pages.
Three Roads to Quantum Gravity has 196 pages.
"Quantum Aspects of Life" by Derek Raine and E.J. Pugh has 240 pages in its paperback edition.
The Quantum Thief is by Hannu Rajaniemi. The main character is Jean le Flambeur. The mass market paperback has 384 pages.
Cats of the Clans has 91 pages.
The Cats of Copenhagen has 40 pages.
Millions of Cats has 32 pages.