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Total tonnage of commodites carried on commercial waterways by traffic type
Total tonnage and tonnage by traffic type (in short tons of 2000 pounds) of commodites carried on commercial waterways, where the origin and destination of the cargo movement... -
Maryland Port Administration General Cargo
Maryland Port Administration General Cargo Monthly Data for the MPA's public terminals (Souce: Internal MPA data)
E' possibile inoltre accedere al registro usando le API (vedi Documentazione API).