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Geophysical and Geochemical Exploration  1990, Vol. 14 Issue (3): 238-240    DOI:
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A PRELIMINARY DISCUSSION ON THE FIRST ARRIVAL REFRACTION METHOD IN THE CASE OF VELOCITY INVERSION OF THE INTERMEDIATE LAYER IN WATERS
Wen Chunde
Geoophysical Prospecting Party, Planning commission for the Changjing River Valley, Ministry of Water Conservancy
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