(3NGJe GdfHjjf (B(1 - 12) / s - (3YHOGdJhGH jhSas; (3YGOd GdHWQGhis ([S.N] : (3OGQ GdcJGH GdeUQi , s, 1990)
Keywords: (3GdSjQI GdfHhjIs; (3GdGWaGds; (3GdbUU GdOjfjIs