A popular guide to minerals : with chapters on the Bement Collection of minerals in the American Museum of Natural History, and the development of mineralogy . Fig. 88a Fig. 88b. ^ <2 < DEFINITION OF TERMS .15 ^^^I 1 rO ^ \o ^ 0 ? *^ 1 c ^.^~ ^

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Keywords: ., bookcentury1900, bookdecade1910, booksubjectmineral, bookyear1912