فهرس المقالات Nourallah Hazeri المقاله 1 - Vitamin B12 used as effective biocatalyst for the synthesis of pyrano[2,3-c]cromenes and pyrano[2,3-d]pyrimidines 10.30495/ijc.2022.689575 Ghasem Marandi Reyhaneh Nadernia Nourallah Hazeri Malek Taher Maghsoodlou Iranian Journal of Catalysis , العدد 1 , السنة 12 , زمستان 2022