Used availability for C Northcote Parkinson's Gunpowder, Treason and Plot
Hardback Editions
March 1977 : USA Hardback
Title: Gunpowder, Treason and Plot
Author(s): Cyril Northcote Parkinson
ISBN: 0-312-35350-2 / 978-0-312-35350-6 (USA edition)
Publisher: St Martins Pr
Availability: Amazon
November 1976 : UK Hardback