SIGNI : signs and signals on inland waterways : resolution no. 22.
United Nations.Economic Commission for Europe.Working Party on Inland Water Transport.
New York ; Geneva : United Nations,
2011.
"ECE/TRANS/SC.3/108/Rev.2."
"Sales No. E.11.II.11."
Signals and signaling
Aids to navigation
Inland water transportation
Inland navigation