Convention of Madrid (30 November 1920) ...
Contributors: Congrès Postal International (7th : 1920 : Madrid)
Series: [Gt. Brit.  Parliament.  Papers by command]  Cmd.; 1537
Publisher: H.M. Stationery Off. [printed by Eyre and Spottiswoode, ltd.]
Published: 1921
Place of publication: London
Language: eng
Number of pages: 31
Subjects: Postal conventions
Notes: At head of title : Universal Postal Union.
French and English in parallel columns.