(3GdaQb Hjf GdaQb (B/ s - (3YHO GdbGgQ GdHZOGOj, YHO GdbGgQ Hf WGgQ Hf eMeO, s (3Jhaj (B429 (3gLQj, s ((3HjQhJ, dHfGf (B: s (3OGQ GdcJH GdYdejI, s, 1990)
(3jJVef GQLGYGJ HHdjhLQGajI(B.s
Keywords: (3GdaQb GdGSdGejI(B.s; (3Yde GdcdGe(B.s