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A scale of grade and class terms for clastic sediments. Based on Wentworth, C.K. 1922. Geological Journal Vol 30 377-392.
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|current||09:01, 12 April 2015||1,224 × 1,953 (178 KB)||Scotfot||A scale of grade and class terms for clastic sediments. Based on Wentworth, C.K. 1922. Geological Journal Vol 30 377-392.|