“Occurrence of Arbuscular Mycorrhizal Fungi After Organic Fertilization in Maize, Cowpea and Cotton Intercropping Systems - Doi: 10.4025 actasciagron.V34i2.13143”. 2011. Acta Scientiarum. Agronomy 34 (2): 149-47. https://doi.org/10.4025/actasciagron.v34i2.13143.