. Diatomaceæ of North America, illustrated with twenty-three hundred figures from the author's drawings on one hundred and twelve plates. Fragilariaceae. . 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 Wolle, Francis, 1817-1893. Bethlehem, Pa. , The Comenius Press

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Keywords: ., bookcentury1800, bookdecade1890, booksubjectfragila, bookyear1890