(3OQGSI ai GdehYXI Ydi GdLHd (B( (3L (B2 ) / s - (3UehFjd MHjHs ((3GdbGgQI (B: s (3OGQ GdKbGaI , s, 1990)
Keywords: (3GdeSjMjI (B- (3YHGOGJs; (3GdGNdGb GdeSjMjIs; (3GfLjd eJis; (3GdehYXIs