The 9th International Congress of the Cement and Finished Parts Industry 1978
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1978
The 9th International Congress of the Cement and Finished Parts Industry
9. Oktober Wz: Keine Bogengröße: 50 Design: Otto Stefferl. Zähnung: 13¾
![[The 9th International Congress of the Cement and Finished Parts Industry, Typ AQI]](https://www.stampworld.com/media/catalogue/Austria/Postage-stamps/AQI-s.jpg)
