The impact of shipping on the invasion of alien plants to Norway Tore Ouren World Shipping Pages: 123 - 132
Competition for the general cargo transports of Sweden's foreign trade Christopher von Schirach-Szmigiel World Shipping Pages: 133 - 146
The concentration of capital in shipping and the optimum size of shipping companies Arnljot Strømme Svendsen World Shipping Pages: 163 - 174