Robert Stewart, with Clint Twist and Edward Horton
A Marshall ed
Washington, D.C.
National Geographic Society,
2003
191 p. , ill. )some col.(, col. maps , 29 cm
غیرمرجع
1
Examines the evidence surrounding some of history's unsolved mysteries, from why the pyramids were built to whether or not there was a conspiracy to kill President John F. Kennedy.
Includes bibliographical references )p. ]184[-185( and index