. Catalogue of the described Diptera of North America [microform]. Diptera; Diptères. IMAGE EVALUATION TEST TARGET (MT-3). ki|2jB | |50 â ^~ â â â II I -^ 1^ L25 iU III. 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 Osten-Sacken, C. R. (Carl Robert), 1828-1906. Washington : Smithsonian Institution

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Keywords: ., bookauthoros, bookcentury1800, bookdecade1870, booksubjectdiptera