(3GdcGaj aj age Yde CeQGV Gdae (B/ s - (3Gdehefj, fPjQ WdGds ((3GQHO (B:s (3eDSSI MeGOI ddOQGSGJ GdLGeYjI h GdfTQ h GdJhRjY,s, 2000)
Keywords: (3GdWHs; (3CeQGV Gdaes