(3GdYdhe GdSdhcjI aj eLGd GdEOGQI h GdEfJGL (B/ s - (3eQSj, SjO YHO GdMejOs ((3GdbGgQI (B:s (3ecJHI hgHI,s, 1984)
Keywords: (3GdEOGQIs; (3JbfjGJ GdEOGQIs; (3EOGQI GdEfJGLs