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. Transactions. Bbin. , d = mm. 800° C. ANNEAL Brin , d= Brin. , d= mm. :^.J0 C. anneal Brin. , d= mm. Fig. 12.—Etched with ammonia and hydrogen peroxide. X 75. 444 A COMPARISON OF GRAIN-SIZE MEASUREMENTS PER CENT. REDUCTION PER CEXT. REDUCTION
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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries