المؤلفون: Mansaray, Abubakarr S., Kaissam, John P., Bockarie, Alfred S., Sam, Hawanatu

المصدر: Natural Resources ; volume 07, issue 03, page 138-145 ; ISSN 2158-706X 2158-7086

الاتاحة: http://dx.doi.org/10.4236/nr.2016.73014
http://www.scirp.org/journal/doi.aspx?DOI=10.4236/nr.2016.73014
http://file.scirp.org/xml/64782.xml