M. IQBAL; A. R. KHAN; M. PANHWAR; M. RAFIQUE; K. MAHMOOD; M. QASIM; N. I. JAJJA. Residual Toxicity of Synthetic and Bio-Insecticides Sprayed on Okra Against Whitefly (Bemisia Tabaci [Genn.]) . Sindh. Uni. Res. J. SS 2017, 49.