فهرس المقالات Triethyl orthoesters حرية الوصول المقاله صفحة الملخص نص كامل 1 - Sulfuric acid immobilized on silica: A versatile and reusable heterogeneous catalyst for the synthesis of phenanthrimidazole derivatives Hossein Behmadi Seyed Mahdi Saadati Mina Roshani Hasan Mohammadi Abbas Razavi Marjan Ramezani
