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Geophysical and Geochemical Exploration  1991, Vol. 15 Issue (2): 152-154    DOI:
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A NEW SEISMIC FOCUS FOR SHALLOW-LAYER SEISMIC EXPLORATION— THE EFFECT OF SEISMIC FOCUS SHOT
Tang Darong
Institute of Hydrogcology and Engirzeering Geology, Ministry of Geology and Mineral Resources
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