(3YdGbI GdJQHI HGdeGA h GdfHGJ (B/ s - (3GdfYjej, SYO Gddg fLe YHO Gddgs ((3GdehUd (B:s (3hRGQI GdJYdje GdYGdj h GdHMK GdYdej (B- (3LGeYI GdehUd,s, 1990)
Keywords: (3GdCQGVjs; (3GdJQHIs; (3GdfHGJs