//-->
Meeresverschmutzung und ihre Auswirkungen in der Nordsee
Rachor, Eike, (1983)
Report, speeches, resolutions : Seamen's and Dockers' Union of Poland; Economic Conference of Seamen und Dockers from Baltic and North Sea Countries, Gdańsk (Poland), 2/3.9.1960
(1961)
The rise of the Atlantic economy and the North Sea - Baltic Trade : 1500 - 1800 ; proceedings of the XVth World Economic History Congress (Utrecht, Netherlands 2009)
Müller, Leos, (2011)