@ARTICLE {HAHN:1989,
title = {Resistance breeding in root and tuber crops at the International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria},
author = {Hahn, S. K. and Isoba, J. C. G. and Ikotun, T. *},
journal = {Crop Protection},
year = {1989},
volume = {8},
number = {3},
pages = {147--168},
issn = {0261-2194},
note = {RTB; Root and Tuber},
}