Changes in the wave-frequencies of the lines of emission spectra of elements . 3^ ^2<n^ .-co4- j£ ^id^ ;;6h^U^ /(X^-(1^Z^ £^ a,<.<^ .-oL^c/l. c^-^,^,.^

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Keywords: ., boo, bookcentury1800, bookdecade1890, booksubjectspectrumanalysis