. Bulletin. Natural history; Science. Raymond N. Carlen, president. Joseph T. Ryerson & Son. is chairman of the metals and machinery John Lind. executive director (retired). Standard Oil of Indiana and American Oil Foundations, is campaign consultant. 18 September 1972. 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 Field Museum of Natural History. [Chicago] : The Museum

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Keywords: ., bookcentury1900, booksubjectnaturalhistory, booksubjectscience