@INPROCEEDINGS {KHATRI-CHHETRI:1999a, title = {Variability of strains of Xanthomonas campestris pv. vignicola, incitant of cowpea bacterial blight and bacterial pustule, collected in several African and other countries}, author = {Khatri-Chhetri, G. and Wydra, K. and Rudolph, K. }, editor = {Mahadevan, A. }, booktitle = {Plant pathogenic bacteria: proceedings of the IXth international conference, Madras, India}, year = {1999}, pages = {296--302}, address = {Madras, India}, }