(3CSGSjGJ Yde GdCQGVj (B/ s - (3ahK, gfQj Os; (3eUWai, CMeO WGgQ YHO GdUGObs ((3fjhjhQc (B:s (3OGQ Lhf hGjdj h CHfGFg,s, 1985)
Keywords: (3GdCQGVjs; (3GdJQHIs