. Carnegie Institution of Washington publication. . A. B. A. The automatic optical periodograph. B. Differential patterns of Sequoia record, 3200 years at -1300 -1000 1-500 AD •500 -1000 -1500 -1900. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Carnegie Institution of Washington. Washington, Carnegie Institution of Washington

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Keywords: ., bookauthorcarnegie, bookcentury1900, bookdecade1900, bookyear1902