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 University Research Journal - SURJ (Science Series), v. 49, n. 3, 18 Sep. 2017.