Isolation of Crude Oil from Polluted Waters Using Biosurfactants Pseudomonas Bacteria: Assessment of Bacteria Concentration Effects Journal title: Engineering, Technology & Applied Science Research Authors: A. Khalifeh, B. Roozbehani, A. M. Moradi, S. Imani Moqadam, M. Mirdrikvand Subject(s): Engineering, Technological Change, Information Science, Industrial Management, Civil Engineering