(3fUhU jefjI Yf GdMedI GdaQfSjI Ydi eUQ (B/ s - (3SjO eUWai SGde (B((3JMbjb(B)s ([S.N] : (3eQcR GdOQGSGJ GdjefjI , s, 1989)
Keywords: (3GdYUQ GdMOjKs; (3eUQs; (3JGQjNs; (3Gdjefs; (3eNWhWGJs; (3HdGO GdTGes; (3GdLRjQI GdYQHjIs; (3fGHdjhf HhfGHQJs; (3YcGs; (3YHOGdQMef GdLHQJis