. Annual report. Field Museum of Natural History; Natural history. CURATOR AND MRS. INGER RECORD FROG CALLS IN THE CONGO. 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: ., bookauthorfieldmuseumofnaturalhistor, booksubjectnaturalhistory