http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
History and ethnoarchaeology in Eastern Nigeria
a study of Igbo-Igala relations with special reference to the Mambra Valley
1 online resource : illustrations, maps.
Philip Adigive Oguagha and Alex Ikechukwu Okpoko.