(3JbQjQ eLdS GdEOGQI GdSfhj hGdejRGfjI h MSGH GdCQHGM hGdNSGFQ (B/ s - (3TQcI efGLe GdahSaGJ GdCQOfjI GdeSGgeI GdeMOhOIs ((3YeGf (B:s (3GdTQcI,s, 1986)
Keywords: (3TQcI efGLe GdahSaGJs; (3JbQjQs; (3GdCQOfs