English predicted predicted English http://en.wikipedia.org/wiki/Prediction_of_volcanic_activity การระเบิดของภูเขาไฟ Prediction of volcanic activity English English factors that could be harbingers of an upcoming explosion en.wikipedia.org... volcanoes factors that could be harbingers of an upcoming explosion factors that could be harbingers of an upcoming explosion Prediction of volcanic activity Prediction of volcanic activity http://en.wikipedia.org/wiki/Prediction_of_volcanic_activity