Biologically hazardous products should be carried on the appropriate signsBiologically hazardous products should be carried on the appropriate signs
The girl shows a sign of silence by raising her finger to her lipsThe girl shows a sign of silence by raising her finger to her lips
The old shot stop sign on the background of the forestThe old shot stop sign on the background of the forest
Signs on a black background are bad, good and excellentSigns on a black background are bad, good and excellent