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Turkish journal of chemistry 32 ( 5 ): 585 - 592 , 2008
Muhammad ARSHAD, Saeed- ur-REHMAN, Ammad Hussain QURESHI, Khalid MASUD, Muhammad ARIF, Aamer SAEED and Riaz AHMED
Turkish journal of chemistry 32 ( 5 ): 593 - 604 , 2008