(3JaSjQ GdbQGf GdYXje , GdeSei Ghdi eGbHd aj GjGJ GdJfRjd (B/ s - (3GdehUdj , QTjO GdNWjHs ((3O(B. (3e (B: s (3O (B. (3f , s, 1973)
Keywords: (3GdbQGfs -- (3JaGSjQ eCKhQIs