A preliminary note on DDT-resistance in rat fleas, Xenopsylla cheopis and Xenopsylla astia, in a sprayed area of Delhi
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Sharma, M. I. D. & Joshi, G. C. (1961). A preliminary note on DDT-resistance in rat fleas, Xenopsylla cheopis and Xenopsylla astia, in a sprayed area of Delhi. Bulletin of the World Health Organization, 25 (2), 270. World Health Organization. https://iris.who.int/handle/10665/267416