The ISBN of Three Roads to Quantum Gravity is 0465078354.
The ISBN of Quantum Psychology is 1561840718.
The ISBN of The Quantum Prophecy is 978-0007210923.
The ISBN of Quantum Theology is 0-8245-2263-X.
The ISBN of The Quantum Thief is 0-575-08887-7.
The ISBN of The Quantum Rose is 0-312-89062-1.
The ISBN of The Lawless Roads is 0140185801.
The ISBN of The Quantum Universe is 978-1-84614-432-5.
The ISBN of The Coming of the Quantum Cats is 0-553-05129-6.
The ISBN of The Place of Dead Roads is 0030704162.
The ISBN of The Salt Roads is 0-446-53302-5.
The ISBN of A Thousand Country Roads is 0-9717667-1-1.
The ISBN of Gravity's Angels is 0-87054-162-5.