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		Image from Amazon.com	Vollers’ 10 Figure-System compiled with the 2 letters minimum difference / R. Vollers. by Vollers, R. [autore] Edition: Reprint 2021 Material type: Text; Format: available online ; Audience: Specialized; Publisher: Berlin ; Boston : De Gruyter, [2021]Copyright date: ©1907 Online resources: Online access Online access Cover Availability: Items available for reference: Biblioteca "Angelicum" Pont. Univ. S.Tommaso d'Aquino: Not for loan (1)Call number: online - DeGruyter. Request article Save to lists Add to cart (remove)
		Image from Amazon.com	Vollers' General Telegaphic Code Anglo-French / Code Général Telégraphic Anglo-Français / R. Vollers. by Vollers, R. [autore] Edition: Reprint 2021 Material type: Text; Format: available online ; Audience: Specialized; Publisher: Berlin ; Boston : De Gruyter, [2021]Copyright date: ©1904 Online resources: Online access Online access Cover Availability: Items available for reference: Biblioteca "Angelicum" Pont. Univ. S.Tommaso d'Aquino: Not for loan (1)Call number: online - DeGruyter. Request article Save to lists Add to cart (remove)