anx_II__cpt_1__cpt_2__point_4__point_a__text_1
2013/488/EU: Council Decision of 23 September 2013 on the security rules for protecting EU classified information · European Union
a perimeter barrier: a physical barrier which defends the boundary of an area requiring protection;
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Source: EUR-Lex (Cellar) · retrieved 2026-11-01 · Text as adopted (Official Journal); later amendments are not incorporated in this text.