TY - GEN AU - Amr Ali Tawfik AU - Ezzat Abd elshafi , AU - Maged Hamed , TI - Environmental management systems performance evaluation in the petroleum sector / PY - 2004/// CY - Cairo : PB - Amr Ali Tawfik , KW - Environmental KW - performance N1 - Thesis (M.Sc.) - Cairo University - Faculty Of Engineering - Department Of Civil Engineering; Issued also as CD UR - http://172.23.153.220/th.pdf ER -