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Przegląd Strategiczny > 2021 > 14 > 457-469
Internal Security > 2013 > 5(2) > 31-50
International Journal of Hygiene and Environmental Health > 2013 > 216 > 1 > 88-90
Internal Security > 2010 > 2 > 2 > 173-180
Internal Security > 2010 > 2(2) > 173-180