. Animal biology. Zoology; Biology. Amniotic ca\/ify Mesoderm Amniotic cavity Ectoderm Embryo Entoderm Entoderm Placenta—^^^^^^^. 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 Wolcott, Robert Henry, 1868-1934. New York ; London : McGraw-Hill Book Company, Inc.

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Keywords: ., bookcentury1900, bookcoll, booksubjectbiology, booksubjectzoology