Asphalt is a sticky, black and highly viscous liquid or semi-solid form of petroleum. It may be found in natural deposits
Asphalt is a sticky, black and highly viscous liquid or semi-solid form of petroleum. It may be found in natural deposits
Asphalt is a sticky, black and highly viscous liquid or semi-solid form of petroleum. It may be found in natural deposits
Asphalt is a sticky, black and highly viscous liquid or semi-solid form of petroleum. It may be found in natural deposits