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Nursing and Exercising Chairs for Children - p268
doi:10.1038/scientificamerican05061854-268f
Per-centage of Tannin in Substances Used in the Arts - p270
doi:10.1038/scientificamerican05061854-270
Deodorizing and Disinfecting Properties of Charcoal, &C - p270
doi:10.1038/scientificamerican05061854-270c
