Columbia subject headings:
Baltiĭsk (Russia)--Commerce--Statistics.
Commercial statistics.
Harbors--Vistula Lagoon (Poland and Russia)--Statistics.
Kaliningrad (Kaliningradskai︠a︡ oblastʹ, Russia)--Commerce--Statistics.
Shipping--Vistula Lagoon (Poland and Russia)--Statistics.
Vistula Lagoon (Poland and Russia)--Commerce--Statistics.
Harvard subject headings:
Baltiĭsk (Russia)--Commerce--Statistics.
Commercial statistics.
Harbors--Vistula Lagoon (Poland and Russia)--Statistics.
Kaliningrad (Kaliningradskai︠a︡ oblastʹ, Russia)--Commerce--Statistics.
Shipping--Vistula Lagoon (Poland and Russia)--Statistics.
Vistula Lagoon (Poland and Russia)--Commerce--Statistics.
Princeton subject headings:
Baltiĭsk (Russia)--Commerce--Statistics.
Commercial statistics.
Harbors--Vistula Lagoon (Poland and Russia)--Statistics.
Kaliningrad (Kaliningradskai︠a︡ oblastʹ, Russia)--Commerce--Statistics.
Shipping--Vistula Lagoon (Poland and Russia)--Statistics.
Statistics.
Vistula Lagoon (Poland and Russia)--Commerce--Statistics.