M. PANHWAR, N. U. AIN, Z. LASHARI, A. R. JAMALI, R. SUHAG, and N. A. ABRO. “Cumulative Impact of Crop Stand and Foliar Urea on Traits of Importance in Sunflower (Helianthus AnnusL”. Sindh University Research Journal - SURJ (Science Series), Vol. 49, no. 4, May 2020, https://sujo.usindh.edu.pk/index.php/SURJ/article/view/1685.