@ARTICLE {OLANYA:1993a,
title = {Incidence and geographical distribution of downy mildew on maize caused by Peronosclerospora sorghi in Nigeria},
author = {Olanya, O. and Fajemisin, J. and Oyekan, P. },
journal = {International Journal of Pest Management},
year = {1993},
volume = {39},
number = {1},
pages = {28--34},
}