The complete set of the Life on Earth books comprising In the Air, In the Sea, On the Land, Before Life, The First Humans and First Life. Fully illustrated they answer questions on how life began and developed and what the first humans were like.
- ISBN13 9780816050444
- Publish Date 28 February 2004
- Publish Status Active
- Publish Country US
- Imprint Facts On File Inc
- Format Hardcover
- Pages 112
- Language English