Answers about dinosaurs and prehistoric mammals.
By: Illustrated by John Hull, Kenyon Shannon [and] R. F. Peterson. Design and editorial production by Donald D. Wolf and Margot L. Wolf.
Series: Answers about
Publisher: Grosset & Dunlap
Published: 1968
Place of publication: New York
Language: eng
Number of pages: 59
Subjects: Vertebrates, Fossil -- Juvenile literature.