Nwazue NR. The Effect of Crude Oil Spill on the Ascorbic Acid Content of Some Selected Vegetable Species: Spinacea oleraceae, Solanum melongena and Talinum triangulare in an Oil Polluted Soil. Pak. J. Nutr. 2011;10(3):274–281. doi:10.3923/pjn.2011.274.281