(3eYLe GdbQGAGJ GdbQBfjI eY ebOeI aj GdbQGAGJ hGTgQ GdbQGA (B/ s - (3YeQ , GMeO eNJGQs; (3ecQe , YHOGdYGd SGde s ((3GdchjJ (B: s (3PGJ GdSdGSd , s, 1988)
Keywords: (3GdbQCf,GdbQGAGJ s