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Internal Security > 2020 > Special Issue > 9-23
Zeszyt Naukowy Apeiron > 2011 > 6 > 121–138
Academicus. International Scientific Journal > 2010 > 1 > 11-21
Internal Security > 2020 > Special Issue > 9-23
Zeszyt Naukowy Apeiron > 2011 > 6 > 121–138
Academicus. International Scientific Journal > 2010 > 1 > 11-21