EDITORIAL CORRESPONDENCE. Separating Coloring Matter from Madder and other Composition for Cleaning Millstones. Gold Mining in California. TAIL WASHING., scientific american, 1868-03-28
EDITORIAL CORRESPONDENCE. Separating Coloring Matter from Madder and other Composition for Cleaning Millstones. Gold Mining in California. TAIL WASHING., scientific american, 1868-03-28
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