. . "Explores various theories of evolution and unravels the mysteries of prehistoric time, from the first life on earth to the appearance of human beings, using modern scientific evidence and methods." . "Explores various theories of evolution and unravels the mysteries of prehistoric time, from the first life on earth to the appearance of human beings, using modern scientific evidence and methods. Suggested level: intermediate, junior secondary." . . . "Mysteries of prehistoric life" . . "أسرار حياة ما قبل التاريخ" . "Prehistoric life" . . "Asrār ḥayāh mā qabla al-tārīkh" . . . . . . . . . . . "Juvenile works" . . . . "Prehistoric peoples Juvenile literature" . . "Animals, Fossil Juvenile literature" . . . .