@INPROCEEDINGS {Williams:1975l,
title = {The international testing program: aims, progress and problems},
author = {Williams, R. J. },
booktitle = {Proceedings of IITA Collabortors' Meeting on Grain Legume Improvement held at IITA on 9-13 June, 1975 edited by R. A. Luse and K. O. Rachie},
year = {1975},
month = {June},
pages = {66--72},
}