A branchy blue sign with a copper painting of eight arrowsA branchy blue sign with a copper painting of eight arrows
A panel of signs, plus, minus, multiplication in a circleA panel of signs, Plus, minus, multiplication in a circle
Environmentally friendly generation of electricityEnvironmentally friendly generation of electricity
The wolf, as a sign of warning, bared his teeth so that his fangs are visibleThe wolf, as a sign of warning, bared his teeth so that his fangs are visible