(3ehShYI gd JYde? (B:s (3OGFQI eYGQa ESdGejI eHSWI (B((3GdLRA GdQGHY(B) /s - (3HGOhjdGf, CMeO SGdes ((3GdQjGV (B:s (3OGQ Whjb ddfTQ hGdJhRjY,s, 2000)
Keywords: (3GdMVGQI GdESdGejIs -- (3OhGFQ eYGQas; (3GdKbGaI GdESdGejIs -- (3OhGFQ eYGQas