ISBN 9780933635388 books & textbook
The Great Old Ones (Call of Cthulhu Horror Roleplaying, 1920s Setting)
Marcus L. Rowland Kevin A. Ross Harry Cleaver Doug Lyons L. N. Isynwill Tom Sullivan Sean Schoomaker John B. Monroe Greg Stafford E. C. Fallworth
Chaosium Inc. /1989-07-01 Paperback / 172 Pages
isbn-10: 0933635389 / isbn-13: 9780933635388
