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53- Leong , G.C.& Morgan . G.C .
      Human and Economic Geography ,
      Second Edition , Oxford University
      Oress , Oxford , 1997 .

54- Reider Person , 1974 , World Forest
      Resources .

55- Sant , M., Applied Geography ,
      Practice , Problems and Prospects ,
      London , 1982 .

56- Toyne , P. & Newby ,P.T.,
      Techniques in Human Geography ,
      Macmillan Education , London ,
      1986 .

             :‫ المصادر الإحصائية‬:ً‫ثالثا‬

      57- The Egyptian Meteorological Authority
            (1979): Cilmatological Normal for A. R. E.
            up. To 1975, Cairo.

      58- The Egyptian Meteorological Authority,
            Monthly Weather Reports, for the Period,
            1950-1995.

      59- World Health Organization/ United Nation
            Environment Program (1988), Global
            Environmental Monitoring System Air
            Monitoring Project.

      60- WMO (NOW), World weather Records,
            1999

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