Economics of air transport in Europe : report submitted to the Sub-Committee /
Bouché, Henri.
League of Nations.Organisation for Communications and Transit.
Geneva : League of Nations,
1935.
"Official no.: C 97. M. 44 1935. VIII."
"Geneva. February 1st, 1935."
"The provisional edition of the report dated December 28th, 1933, was circulated to European countries only." It appears as part one of this final edition.
Aeronautics
Economics of air transport in Europe.