Discusses research and theories concerning the earliest human beings.
- ISBN10 0688072372
- ISBN13 9780688072377
- Publish Date 1 February 1990 (first published 1 January 1989)
- Publish Status Out of Print
- Out of Print 13 March 2021
- Publish Country US
- Imprint Morrow Junior Books
- Format Hardcover
- Pages 144
- Language English