A. S. · Frederick S. · Frederick Swarts
Hudson Macarthur Pub Inc · Paragon House Publishers
| title | ISBN-13 (ISBN-10) | year of publica- tion |
|---|---|---|
| The Pantanal of Brazil, Bolivia and Paraguay: Selected Discourses on the World's Largest Remaining Wetland System | 978-0-9675946-0-6 (0-9675946-0-X) | 2000 |
| The Pantanal: Understanding and Preserving the World's Largest Wetland | 978-1-55778-791-0 (1-55778-791-3) | 2000 |