Three Australian children discover ancient magical creatures living under the streets of the city.
- ISBN10 0152036008
- ISBN13 9780152036003
- Publish Date 1 January 1972
- Publish Status Out of Print
- Out of Print 23 December 2015
- Publish Country US
- Imprint Houghton Mifflin Harcourt P
- Format Hardcover
- Pages 186
- Language English