Committee on the unification of transport statistics.
League of Nations.
Geneva : League of Nations,
1932.
Cover title.
"Official no.: C.L.98.1932.VIII. Annex."
"Geneva, June 15th, 1932."
Report of the unification of transport statistics -- Draft international convention on transport statistics together with regulations relating respectively to maritime navigation, railways and inland navigation -- Recommendations with regard to administrative and technical statistics concerning respectively maritime navigation, railways and inland navigation.