Function: noun
Date: 1939
: the system of protective measures and emergency relief activities conducted by civilians in case of hostile attack, sabotage, or natural disaster
Function: noun
Date: 1939
: the system of protective measures and emergency relief activities conducted by civilians in case of hostile attack, sabotage, or natural disaster
Merriam Webster Collegiate English Dictionary. Merriam Webster - Энциклопедический словарь английского языка. 2012