Citadels of Mystery
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Overview:
- Title: Citadels of Mystery
- Author: L. Sprague de Camp, Catherine C. de Camp
- Year: 1973
- ISBN-10: 0345032152
- Publisher: Ballantine Books
- Price: $1.25
- Pages: 292
- Binding: Paperback
- Type: Non-fiction
- Title Reference: Citadels of Mystery
- Notes: Stated 1st printing. Original title "Ancient Ruins and Archeology".