(3GdLf (B: s (3JdHSg HGdGfSGf hYdGLg HGdbQGf (B/ s - (3GdWjHj, YcGTg YHO GdefGfs ((3GdbGgQI (B:s (3ecJHI GdJQGK GdGSdGej,s, 1992)
Keywords: (3CUhd GdOjf GdESdGejs