Poisonous properties of the whorled milkweeds Asclepias pumila and Averticillata vargeyeri . Fig. 5.—Sheep 547, at a. 28. Fig. 6.—Sheep 547, at a. 28. Bui. 942, U. S. Dept. of Agriculture. Plate Fig. 547, at p. 28.

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Keywords: ., bookcentury1900, bookdecade1920, bookpublisherwashi, bookyear1921