3-Dimensional Graph
60%
| Country: | United States of America |
|---|---|
| Issue: | Science and Industry Issue |
| Date: | 1983-01-19 |
| Print: | Recess |
| Perforation: | 11 |
| Emission: | Commemorative |
| Format: | Stamp |
| Face Value: | 20 United States cent |
| Print run: | 119 |