The Riddle of the Pyramids Kurt Mendelssohn Popularity → Current 20 Peak 55 Niche 75 "This fascinating book is a union of physics and Egyptology. It is constructed like a mystery story, and it would be unfair to give away too much of the plot. ..." The New Yorker. Praeger Publishers a division of Holt, Rinehart and Winston 1977 224 pages