(3GdQj (B: s (3CSGSjGJg h JWHjbGJg (B/ s - (3GdWja, fHjd EHQGgjes; (3GdMOjKj, YUGe NVjQs ((3HZOGO (B:s (3hRGQI GdJYdje GdYGdj h GdHMK GdYdej,s, 1988)
Keywords: (3GdQjs; (3GdRQGYIs