(3GdEfSGf h GdMbjbI (B/s - (3GdecJH GdYGdej ddHMhK s ((3HjQhJ (B:s (3efThQGJ GdecJH GdYGdej ,s, 1988)
Keywords: (3GdEfSGf s; (3GdMbjbI s