Determination of Economic Threshold Level (ETL) of Jassid, Amrasca bigutulla bigutulla (Cicadellidae:Homoptera). - Nawaz, Shoaib; Razaq, Muhammad; Sarwar, Zahid Mahmood; Sajjad, Muhammad; Ubaid, Syeda Aneeza; Zulfiqar, Muhammad Asif; Haider, Usman (Pakistan Journal of Agricultural Research, 2019)