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Studies on particle size distribution in relation to dispersibility. II. 75 Per cent D. D. T., 50 per cent B. H. C. and 50 per cent dieldrin water dispersible powders
Studies on particle size distribution in relation to dispersibility. II. 75 Per cent D. D. T., 50 per cent B. H. C. and 50 per cent dieldrin water dispersible powders