"(3GdScf GdMVQi ai GdYGde GdKGdK(B: (3OQGSGJ GbdjejI (B""(3GdeTcdGJ hGdMdhd(B""" / s - (3LQGfhjJjg, HQfGQs; (3eMeO Ydi HgLJ (B((3JbOje(B)s ([S.N] : (3efTGI GdeYGQa GdGSdGejI , s, 1987)
Keywords: (3GdOhd GdfGejIs; (3GdeHGfis; (3GdHfGAs; (3GdeSGcfs; (3JNWjW GdeOfs; (3GdGMjGA GdScfjIs