Benzolformel von Friedrich August Kekulé
Stamp: "Benzolformel von Friedrich August Kekulé "
| Printed value | 10 Pfennige  |
Motif, Topic | Chemistry |
| Circulation | 70.000.000 | Valid until | December, 31 - 1966 |
| Published | August, 14 - 1964 | Design | Karl Oskar Blase |
Description
Benzolformel von Friedrich August Kekulé von Stradonitz
From the series: "Fortschritt in Technik und Wissenschaft"