فهرس المقالات Khodabakhsh Niknam المقاله 1 - Silica-bonded n-propyldiethylenetriamine sulfamic acid as a recyclable solid acid catalyst for the synthesis of coumarin and biscoumarin derivatives Khodabakhsh Niknam Seyed Ahmad Sajadi Roghayeh Hosseini Mojtaba Baghernejad Iranian Journal of Catalysis , العدد 4 , السنة 4 , تابستان 2014
