покажчик біологічного зараження
tactical sign (tac-sign)
bio pictures
bio research module
bio-accumulation
bio-detection
bio-optic synthetic system
bio-oxidation
bio-oxidation system
call sign (callsign)
collective call sign
conventional sign
marking sign
net call sign
tactical call sign
circular call sign
hazard sign
mine sign
crossing sign
deviation sign
aerodrome identification sign
sign
address call sign
challenging sign
call sign
gas warning sign
trail sign
visual call sign
voice call sign
warning sign
call sign (signal)
code sign
collective сall sign