https://digital.library.lse.ac.uk/Documents/Detail/report-on-the-census-of-production-for-1990.-pa420-sugar-and-sugar-by-products/504766
Report on the Census of Production for 1990. PA420 Sugar and sugar by-products - LSE Digital Library
https://digital.library.lse.ac.uk/Documents/Detail/report-on-the-census-of-production-for-1988.-pa420-sugar-and-sugar-by-products/456731
Report on the Census of Production for 1988. PA420 Sugar and sugar by-products - LSE Digital Library
https://digital.library.lse.ac.uk/Documents/Detail/report-on-the-census-of-production-for-1986.-pa420-sugar-and-sugar-by-products/453805
Report on the Census of Production for 1986. PA420 Sugar and sugar by-products - LSE Digital Library
https://digital.library.lse.ac.uk/Documents/Detail/report-on-the-census-of-production-for-1989.-pa420-sugar-and-sugar-by-products/503299
Report on the Census of Production for 1989. PA420 Sugar and sugar by-products - LSE Digital Library