(3GdSjGSI GdLfGFjI GdeYGUQI (B:s (3OQGSI JMdjdjI dfXQjI GdOaGY GdCLJeGYj (B/s - (3GdSjO jS s ([(3ZjQ eMOO (B] :s (3OGQ GdacQ GdYQHj(B,s, 1973)
(3HHdjhLQGajGJ(B.s
(3GdfU CZdHg HGddZI GdYQHjI eY HYV GdfUhU GdaQfSjIs
Keywords: (3Yde GdSjGSI GdLfGFjIs