The Relative Toxicity, Synergistic Activity, and Knockdown Effectiveness of Mixtures of Piperonyl Butoxide with Allethrin and Its Trans Fraction and Isomers as House Fly Sprays1

Abstract
W. A. Gersdorff, Norman Mitlin, P. G. Piquett; The Relative Toxicity, Synergistic Activity, and Knockdown Effectiveness of Mixtures of Piperonyl Butoxide with