Publication

Number of items: 4.
Article
  • Field-trials of anti-capsid insecticides on farmers' cocoa on Ghana, 1956-60. 2, Effects of different insecticides compared by counting capsid-counting compared with counting the percentage of newly damaged treses. (1971) Burge, G. A., Johnson, C. G.
  • Field trials of anti-Capsid insecticides on farmers' cocoa in Ghana, 1956-60. 1, Comparing the effects of treatments by assessing subsequent damage. (1970) Johnson, C. G., Burge, G. A., Gibbs, D. G.
  • Field trials of anti-Capsid insecticides on farmers' cocoa in Ghana, 1956-60. 1, Comparing the effects of treatments by assessing subsequent damage. (1970) Johnson, C. G., Burge, G. A., Gibbs, D. G.
  • A survey of Cape St Paul Wilt of coconut in West Africa. (1976) Johnson, C. G., Harries, H. C.