Search for: ([Subject and Keywords = spatial barriers] OR [Subject and Keywords = state borders] OR [Subject and Keywords = flows of persons] OR [Subject and Keywords = cross\-border traffic] OR [Subject and Keywords = commodity flows] OR [Subject and Keywords = foreign trade] OR [Subject and Keywords = cross\-border cooperation] OR [Subject and Keywords = tourism] OR [Subject and Keywords = landscape conservation] OR [Subject and Keywords = nature conservation] OR [Subject and Keywords = accessibility] OR [Subject and Keywords = border regions] OR [Subject and Keywords = European Union] OR [Subject and Keywords = Europe] OR [Subject and Keywords = Vistula Lagoon] OR [Subject and Keywords = Poland] OR [Subject and Keywords = Slovakia] OR [Subject and Keywords = Germany] OR [Subject and Keywords = Polska Akademia Nauk \-\- czasopisma \[KABA\]] OR [Subject and Keywords = Europa \-\- czasopisma \[KABA\]] OR [Subject and Keywords = bariery przestrzenne] OR [Subject and Keywords = granice państwowe] OR [Subject and Keywords = przepływy osób] OR [Subject and Keywords = przepływy towarowe] OR [Subject and Keywords = ruch transgraniczny] OR [Subject and Keywords = handel zagraniczny] OR [Subject and Keywords = współpraca transgraniczna] OR [Subject and Keywords = turystyka] OR [Subject and Keywords = ochrona krajobrazu] OR [Subject and Keywords = ochrona przyrody] OR [Subject and Keywords = dostępność] OR [Subject and Keywords = regiony przygraniczne] OR [Subject and Keywords = Unia Europejska] OR [Subject and Keywords = Europa] OR [Subject and Keywords = Zalew Wiślany] OR [Subject and Keywords = Polska] OR [Subject and Keywords = Słowacja] OR [Subject and Keywords = Niemcy] OR [Title = Europa XXI 20 \(2010\), Contents])

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