Nwaogu, Chukwudi, Olawoyin, Modupeola, Kavianu, Vincent, AND Pavlů, Vilém. " Soil dynamics, conservation and food supply in the grassland ecological zone of Sub-Sahara Africa: The need for sustainable agroecosystem management for maize (Zea mays)" Development, Environment and Foresight [Online], Volume 2 Number 2 (25 November 2016)