Williams, R. J. B. 1969. The rapid determination of nitrate in crops, soils, drainage and rainwater by a simple field method using diphenylamine or diphenylbenzidine with glass fibre paper. Chemistry & Industry. pp. 1735-1736.
Mattingly, G. E. G. 1980. The reliability of soil phosphorus analysis in relation to fertiliser recommendations. Chemistry & Industry. 17 (6 Sept), pp. 690-693.
Martin, J. T. and Tattersfield, F. 1939. The trend of progress‐insecticides. Chemistry & Industry. 58 (27), pp. 635-640. https://doi.org/10.1002/jctb.5000582702
Graham-Bryce, I. J., Elliott, M., Sawicki, R. M., Greenway, A. R., Griffiths, D., Scott, G., Jeffs, J., Mudd, A., Stevenson, J. H., Mcintosh, A. H. and Phillips, F. 1974. Work of the Insecticide Department - Rothamsted. Chemistry & Industry.
Ashworth, J., Rodgers, G. A. and Briggs, G. G. 1979. Xanthates as inhibitors of fertilizer nitrogen transformation in soil. Chemistry & Industry. (3), pp. 90-92.