(3YfOeG MceJ eUQ GdTQb (B/ s - (3L(B. (3TJjfOhQas; (3eMeO GdYRH ehSis; (3eMehO eGgQ Wgs; (3Sjd, cs ([S.N] : (3ecJHI eOHhdi , s, 1990)
Keywords: (3eUQs; (3JGQjNs; (3eUQ GdbOjeIs; (3GdMVGQI GdaQYhfjIs; (3GdUhQs; (3GdOjGfGJ GdeUQjI GdbOjeIs; (3NQjWI LeghQjI eUQ GdYQHjIs; (3NQjWI adSWjfs; (3GdGfGTjO GdaQYhfjIs; (3WjHIs