If There Were Demons, Perhaps There Were Angels
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Overview:
- Title: If There Were Demons, Perhaps There Were Angels
- Author: William Peter Blatty
- Year: 1974
- Type: Essays
Editions/Publications:
- Unknown. The Exorcist: Studies in the Horror Film (Unknown, William Peter Blatty, Centipede Press, ISBN-10: 9781933618968, $40.00, 516 pages, Trade Paperback, Non-fiction)