Research ArticleOpen accessPhrase in the titleSelected Heavy Metals as Indices of Atmospheric Pollution in African Locust Bean (Parkia biglobosa) Tree BarksOlatunde S. Olatunji, Oladele Osibanjo, Olalekan S. Fatoki et al.American Journal of Environmental Sciences, Vol. 12, Issue 1 · 2 Mar 2016 · 7,810 accessesView PDFCite