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Covering Engraved Copper Plates with Copper - p146
doi:10.1038/scientificamerican01081859-146
Sorghum Molasses and Printers' Rollers - p146
doi:10.1038/scientificamerican01081859-146f
Roesler & Frey's Self-Lighting Lantern - p148
doi:10.1038/scientificamerican01081859-148d
