Intergovernmental Maritime Consultative Organization. & Great Britain. Board of Trade. Commercial code of signals. (1969). International code of signals, 1969: Suitable for transmission by all means of communication coming into operation 1 April 1969. H.M. Stationery Off..
MLA CitationIntergovernmental Maritime Consultative Organization. and Great Britain. Board of Trade. Commercial code of signals. International Code of Signals, 1969: Suitable for Transmission by All Means of Communication Coming into Operation 1 April 1969. H.M. Stationery Off., 1969.
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