Picture size: ~. Minor discoloration at the folds. Year of manufacture (The pen is not included.). Publication Year Thickness: ~.
| Unit Type | Unit |
| Publication Year | 1953 |
| Type | Geological Map |
| Language | English |
| Region | Central America |
| Country | United States |
| Author | Gilbert Grosvenor |
| Features | Folding Map |
| Publisher | National Geographic |
Picture size: ~. Minor discoloration at the folds. Year of manufacture (The pen is not included.). Publication Year Thickness: ~.
