(3Gdbhd GdeajO aj Mce GdCfGTjO (B/s - (3GdeQj, YUGe YHO GdefYes 1381 (3gLQj(B-s ((3YLeGf (B- (3GdEeGQGJ GdYQHjI GdeJMOI s (3ecJHI GdaQbGf ,s, 2000)
Keywords: (3GdESdGe hGdZfGAs; (3GdESdGe hGdCfGTjOs