. A contribution to insect embryology. Insects. :^z^:: pel <ri^' .',f^ i-VW-. L%i**isir^^<«^^. 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 Wheeler, William Morton, 1865-1937. Boston : Ginn & Company

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Keywords: ., bookcentury1800, bookdecade1890, bookpublishe, booksubjectinsects