Road signalling : recommendations and prescriptive rules adopted by the European Conference on Road Traffic and the Permanent Committee on Road Traffic.
League of Nations.Organisation for Communications and Transit.
European Conference on Road Traffic(1931 :Geneva, Switzerland)
European Conference on Road Traffic.
Geneva : League of Nations,
1933.
"This booklet replaces document C.23.M.17.1929. VIII."
"Geneva, December 15th, 1933".
"Communicated to the Council and the members of the League".
"Official no. C 671. M. 321. 1933. VIII".
At head of title: League of Nations, Organisation for Communications and Transit.
Automobiles
Signals and signaling, Automobile.
Traffic regulations.