OLOGUNDUDU, A. F., & ADELUSI, A. A. (2013). Effect of Nitrogen Nutritional Stress on some Mineral Nutrients and Photosynthetic Apparatus of Zea mays L. and Vigna unguiculata L. Notulae Scientia Biologicae, 5(3), 376-382. https://doi.org/10.15835/nsb539015