. Principles of economic zoo?logy. Zoology, Economic. BRANCH CHORDATA Bbanch Chordata comprises many of our best-known- and valued Fig. 150.—A series of embryos at three compatible and pro!;ressi\-o stages of development (marked I, II, III), representing each of the classes of vertebrated animals below the Mammalia. (After Hackel.) 188. 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 Daugherty, Lewis Sylvester, 18
. Principles of economic zoo?logy. Zoology, Economic. BRANCH CHORDATA Bbanch Chordata comprises many of our best-known- and valued Fig. 150.—A series of embryos at three compatible and pro!;ressi\-o stages of development (marked I, II, III), representing each of the classes of vertebrated animals below the Mammalia. (After Hackel.) 188. 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 Daugherty, Lewis Sylvester, 1857-; Daugherty, L. S. , Mrs. , 1859-. Philadelphia, London, W. B. Saunders
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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherphila, bookyear1915
