(3JYRjI GdeSde Yf GNjg (B/ s - (3GHf YSGcQ(B: (3GHheMeO GdbGSe Ydi Hf GdMSf Hf gHI Gddg Hf GdMSjfs; (3eLOi aJMi GdSjOs ((3GdQjGV (B: s (3ecJHI GdUMGHI , s, 1991)
Keywords: (3GdKbGaI GdGSdGejIs; (3GdLfGFRs; (3GdJYRjIs