A Survey of Heavy Metals content of Soil and plants As Affected by Long-Term Application of Sewage Water. A Case StudyE. M. Abd El Lateef, J. E. Hall, S. R. Smith, B. A. Bakry and T. A. ElewaE3S Web of Conferences, 1 (2013) 41001DOI: https://doi.org/10.1051/e3sconf/20130141001