Wyniki
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Social security as part of the national security system of Bulgaria
Nikolay Nichev
Security and Defence Quarterly /1(14) (2017) s. 3-20 -
Radiation safety of Bulgaria in the contemporary international situation
Nikolay Dolchinkov
Security and Defence Quarterly /4(13) (2016) s. 3-14 -
Sources of natural background radiation
Nikolay Todorov Dolchinkov
Security and Defence Quarterly /3(16) (2017) s. 40-51