This hardcover textbook titled “The Riddle of Gravitation” by Peter Bergmann is a comprehensive guide to physical sciences, gravitation, relativity, and applied mathematics. The book is published by Charles Scribner’s Sons in English language with a publication year of 1987. The book is formatted as a hardcover with dust jacket and line drawings and is approximately 9.5 inches in length, 6.5 inches in width, and 1 inch in height. The book weighs about 21.0 Oz and contains 233 pages, including appendixes, index, glossary, and references. It is suitable for high school and adult learners who are interested in advanced level mathematics and physics. The Riddle of Gravitation is an ideal resource for those seeking to broaden their knowledge in the field of physical sciences, without needing advanced knowledge of the subject.