Nnaemeka, Ugwu Samson, Anyadike Chinenye Chukwuemeka, Echiegu Emmanuel, Nwoke Oji Achuka, and Ugwuishiwu Boniface. 2014. “Influence of Automobile Industrial Wastewater on Soil Quality”. International Journal of Agricultural and Biological Engineering 7 (6):123-28. https://ijabe.migration.pkpps06.publicknowledgeproject.org/index.php/ijabe/article/view/821.