(3JcfhdhLjG GdJYdje hJfejI GdbOQI Ydi GdacQ GdGHJcGQi (B/ s - (3GMeO MGeO efUhQs; (3SjO NjQGddg (B((3JbOje(B)s ([S.N] : (3OGQ GdhaGA ddWHGYI hGdfTQ hGdJhRjY , s, 1989)
Keywords: (3GdJYdjes; (3GdHQeLIs; (3GdJcfhdhLjGs; (3GdGLJeGYs; (3GdJacjQs; (3GdhSGFd GdJYdjejIs; (3GdGLgRIs; (3GdGHJcGQs