ISBN 9781568821443 books & textbook
The Keeper's Companion: Blasphemous Knowledge, Forbidden Secrets: A Core Book for Keepers, Vol. 1 (Call of Cthulhu Horror Roleplaying, #2388)
Chaosium, Inc. /2000-09-01 Paperback / 208 Pages
isbn-10: 1568821441 / isbn-13: 9781568821443
