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chemicals -- dictionaries

Merck's index

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Verzeichniss sämmtlicher Präparate, Drogen und Mineralien mit Erläuterungen

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Merck's index of fine chemicals and drugs for the materia medica and the arts

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Merck's index.

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Merck index of chemicals and drugs

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Merck's 1907 index

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The Merck index

By Maryadele J. O'Neil