(3SGHb Hf YHO Gddg GdHQHQj (B/ s - (3Vja, HOQ CMeOs ((3GdbGgQI (B:s (3OGQ GdeYQaI GdLGeYjI,s, 1987)
Keywords: (3GdTYQ GdYQHjs; (3GdJQGLes