Chapter 13. Cadwaladr J. Lewis. 1977. The economics of pesticide research. Pages 237-245. In: J. M. Cherrett, G. R. Sagar. Origins of Pest, Parasite, Disease and Weed Problems. The 18 th Symposium of the British Ecological Society, Bangor, 12-14 April 1976, 413 pages.

Keywords: research costs, growth patterns of pesticide usage, herbicides, geographical, crops, mixtures, recent trends, pesticide introduction trends, annual introduction of pesticides 1945-75