(3cJGH GdJHQj ef eYQI GdeYQj h JMaI GdXQaGA HCSeGA GdNdaGA (B/ s - (3GdSjhWj, LdGd GdOjf CHh GdaVd YHO GdQMefs; (3fUGQ, eMehO eMeO eMehO MSfs ((3HjQhJ (B:s (3OGQ GdLjd,s, 1989)
Keywords: (3GdTYQ GdYQHj GdCSeGAs; (3GdcdGHs