. Early geophysical papers of the Society of Exploration Geophysicists. Petroleum; Prospecting. Fig. 3. obtained are the resultants of the oscillations of the ground and of the seis- Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Society of Exploration Geophysicists. Tulsa

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Keywords: ., bo, bookcentury1900, booksubjectpetroleum, booksubjectprospecting