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  Land-locked States of Africa and Asia - Google Books

  http://books.google.de/books?id=dGjh1GGRlagC

  Since 1991 more than a dozen new land-locked states have emerged to be confronted with the geostrategic problems of access and communications. Contributors present the implications of land-lockedness and the historical development of trade routes.

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  Halford Mackinder und das Heartland | Heartland

  https://web.archive.org/web/20120709173954/http://theheartlandblog.wordpress.com/2012/07/01/halford-mackinder-und-das-heartland/

  Keine Beschreibung vorhanden.

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