20090125201600.0 Publications of the Earth Physics Branch, Department of Energy, Mines and Resources 0373-4838 Publications of the Earth Physics Branch, Department of Energy, Mines and Resources. 0373-4838 Canada 0373-4838 Publications of the Earth Physics Branch, Department of Energy, Mines and Resources Publications of the Earth Physics Branch, Department of Energy, Mines and Resources. 0373-4838 0373-4838