. A contribution to the morphology and biology of insect galls. Galls (Botany). Tkans. Can. Inst. Vol. IX PLATIi XII. 78 COStNS ON CALLS 79 HELIOTVPE CO., 80!!T0N. 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 Cosens, A. (Absalom), d. 1938; University of Toronto. Theses (Ph. D. ). [Toronto : University Press]

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Keywords: ., bookcentury1900, bookdecade1910, booksubjectgallsbo, bookyear1912