(3Gdchf h GdWGbI (B/ s - (3GdecJH GdYGdej ddHMhK (B((3HjQhJ(B)s ((3HjQhJ (B:s (3GdecJH,s, 1983)
Keywords: (3Yde Gdadcs; (3JcfhdhLjG GdaVGAs; (3GdWGbI GdMQGQjIs