الفهرس 
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Abstract
The present study is performad on the subsurface sediments of el- arish-rafah district.The study is carried out on the materials of nina boreholes (3 at el-arish, 2 at zowied and 4 at rafah) drilled to a depth ranging from 32 to 84 m. 135 reprssntative samples from the different boreholes were selected at 2 m interval for the prasent investigtion.