American Educational Unmounted Double-Concave Lens with Ground Edges, 50mm Diameter, 10cm Focal Length (Bundle of 5)
| Country | USA |
| Brand | Adventure Publications |
| Manufacturer | Adventure Publications |
| Binding | Paperback |
| ReleaseDate | 2020-05-19 |
| UnitCount | 1 |
| EANs | 9781591939696 |