//-->
The sea trades in iron ore and coal
(1971)
Simulation modeling of coal terminals
Lauga, T. J., (1980)
Eksport polskiego we̜gla droga̜ morska̜, jego perspektywy i potrzeby
Cios, Jan, (1969)
Coals from Newcastle : the story of the north east coal trade in the days of sail
Finch, Roger, (1973)