(3GdEMUGA GdJWHjbj (B/ s - (3GdLHhQj, TdGd MHjH YHO Gddgs ((3HZOGO (B:s (3hRGQI GdJYdje GdYGdj h GdHMK GdYdej (B- (3GdLGeYI GdeSJfUQjI,s, 1991)
Keywords: (3fXQjI GdEMJeGdGJs; (3GdEMUGA GdQjGVjs; (3GdEMUGAGJs