. The Canadian field-naturalist. 68 70 72 74 76 78 80 82 84 86 88 YEAR. 68 70 72 74 76 78 80 82 84 86 88 YEAR Heptachlor epoxide (mg/kg). 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 Ottawa Field-Naturalists' Club. Ottawa, Ottawa Field-Naturalists' Club

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Keywords: ., bookauthorottawafi, bookcentury1900, bookdecade1910, bookyear1919