Abstract
IN view of Beckley's advocacy of pyrethrum dust for weevil control in bagged grain1, the following comparison with the gamma isomer of benzene hexachloride is of interest.
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References
Beckley, V. A., Nature, 162, 737 (1948); E. Afric. Agric. J., 14, 71 (1948).
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BOVINGDON, H. Persistence of Pyrethrins and Gamma Isomer of Benzene Hexachloride. Nature 163, 731–732 (1949). https://doi.org/10.1038/163731b0
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DOI: https://doi.org/10.1038/163731b0
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