Szukana fraza: [Bibliografia = "Böhm H., Opioła W., 2019, Czech\-Polish Cross\-Border \(Non\) Cooperation in the Field of the Labor Market\: Why Does It Seem to Be Un\-De\-Bordered\? Sustainability, Special Issue Sustainable Cross\-Border Cooperation\: Common Planning, Policies, Strategies, Methods and Activities, 11. https\:\/\/doi.org\/10.3390\/su11102855"]