Torgoman، A. A.، و Ezzo، E. (1982). CATALYST TECHNOLOGY AND PETROCHEMICAL INDUSTRY: Catalyst and its roll in the National Economy. مجلة التربية، ع52 ، 18 - 25. مسترجع من http://search.mandumah.com/Record/680912
Torgoman، Abd Almonaim، و Essam Ezzo. "CATALYST TECHNOLOGY AND PETROCHEMICAL INDUSTRY: Catalyst and Its Roll in the National Economy." مجلة التربية ع52 (1982): 18 - 25. مسترجع من http://search.mandumah.com/Record/680912