UNSPECIFIED (1995) Year, Side Shake, Planes, Lifting, Plates, Clock, Thickness of, Four-hundred Day Clocks, Friction, Disengaging, Engaging, of Teeth, Springs, G Gathering Pallet, 338, Gilding, Gong Wires, Graham Escapement, 109, Gravity, Center of, Escapement, Gregorian Calendar, H Half Hour Strike. Journal of School of Geography, 10 (1).