The earlier wells in Pennsylvania consisted of three sections, the first formed of surface clays and gravels, the second of stratified rocks containing water, and the third of stratified rocks, including the oil-sands, usually free from water. [Please select]
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I think Dorothy's still over at the Clays', playing tennis. [Please select]
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Munthe; Mechanical Disturbances and Chemical Changes in the Ribbon Clays of Sweden, by P. [Please select]
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The physical condition of the soil is equally important: heavy clays or water-logged soils are bad. [Please select]
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Bodies, Miscellaneous Bodies, Sagger and Crucible Clays, Coloured Bodies, Jasper Bodies, Coloured Bodies for Mosaic Painting, Encaustic Tile Bodies, Body Stains, Coloured Dips. [Please select]
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