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10- Ibid  p.231.
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15- Violette,E.J.,R.H.Espeland,and F.Schwering,Vegetation Loss Measurements at 9.6,28.8 and 57.6 GHz through a pecan Orchard in Texas, CECOM-83-2,U.S.Army Communications-Electronics Command, Fort Monmouth,NJ,March 1983.