Harris, E. 1961 Distortion of guineacorn (Sorghum vulgare) caused by a mealybug, Heterococcus nigeriensis Williams, in Northern Nigeria.. Bulletin of Entomological Research 51: 677-684.
Harris, E. 1961 Distortion of guineacorn (Sorghum vulgare) caused by a mealybug, Heterococcus nigeriensis Williams, in Northern Nigeria.. Bulletin of Entomological Research 51: 677-684.