The Underground City
Jennifer Martucci & Christopher Martucci
| First published | January 2014 |
|---|---|
| Type | Novel |
| Series | Planet Urth #3 |
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| January 2014 |
|
The Underground City | Jennifer and Christopher Martucci | Novel | |
| June 2016 |
|
The Underground City | Martucci Books | Novel | |
| November 2016 |
|
Planet Urth Boxed Set: Books 1-5 | Jennifer and Christopher Martucci | Omnibus | |3 |
| August 2019 |
|
Undaunted: A 10-Book Boxed Set | Jennifer and Christopher Martucci | Omnibus | |3 |