?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=V+C&rft.au=Umeh%2C+V+C&rft.aulast=Umeh&rft.atitle=Soil+pests+of+groundnut+in+West+Africa+-+species+diversity%2C+damage+and+estimation+of+yield+losses&rft.title=Insect+Science+and+its+Application&rft.issn=0191-9040&rft.date=1999&rft.volume=19&rft.pages=131-140&rft.issue=2-3&rft.genre=article