@PROCEEDINGS {AKOBUNDU:1981d, title = {An assessment of weed interference in white yam (Dioscrorea rotundata Poir)}, author = {Akobundu, I. and Unamma, R. P. A. }, editor = {Terry, E. R. and Oduro, K. A. and Caveness, F. E. }, booktitle = {Tropical Root Crop Research Strategies for the 1980s. IDRC-163e, Ottawa, Ontario}, year = {1981}, note = {RTB; Root and Tuber; Yam}, }