The Niger Delta environment as resource and reserve

The Niger Delta environment as resource and reserve : History Concourse 2011 / edited by Ebiegberi Joe Alagoa, Bio Louis Nyananyo & Alfred Adonye Allison . Port Harcourt : Onyoma Research Publications, 2012 . xxxv, 405 stran . ISBN 978-978-8195-35-1 (brož.) .   [1, z toho volných 1]