This episode of Horizon is about the east coast marshes of America, called the "Wetlands" and the effects of urban development on the wildlife.
| Title | The Billion-Dollar Marsh |
|---|---|
| Genres | Documentary |
| Release Date | 1972-11-09 |
| Episode Runtime | 01 Hours 00 Minutes |
| Season Number | 9 |
| Episode Number | 27 |
| Production Companies | Unknown |
