(3gPG GdJacjQ GdYdej bO CNWC adeGPG (B/ s - (3GdYQHj, eMeO eMehOs ((3YeGf (B:s (3GdTQcI GdOhdjI ddWHGYI h GdfTQ,s, 1990)
Keywords: (3Yde GdfaSs; (3GdJacjQs