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MOUNT ST. HELENS EXPLODED IN AN ERUPTION WITH THE...
MOUNT ST. HELENS EXPLODED IN AN ERUPTION WITH THE ENERGY EQUIVALE...
LUYEN THI TOIEC 870 CAU TRAC NGHIEM
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665. Mount St. Helens exploded in an eruption with the energy equivalent to 10 million tons A B C DTNT.
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665.
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LUYEN THI TOIEC 870 CAU TRAC NGHIEM