فهرس المقالات Seyyed Mohammad Ebrahimi المقاله 1 - PbWO4 nanoparticles: A robust and reusable heterogeneous catalyst for the synthesis of benzopyranopyridines under ultrasonic irradiation Hossein Shahbazi-Alavi Javad Safaei-Ghomi Ruhollah Talebi Iranian Journal of Catalysis , العدد 2 , السنة 7 , بهار 2017
