@techreport{fdi:04643,
  title = {{A} new system of soil appraisal in terms of actual and potential productivity (first approximation)},
  author = {{R}iquier, {J}ean and {B}ramao, {D}.{L}. and {C}ornet, {J}ean-{P}aul},
  editor = {},
  language = {{EN}},
  abstract = {},
  keywords = {{RESSOURCES} {EN} {SOL} ; {APTITUDE} {DU} {SOL} ; {EVALUATION} ; {CLASSIFICATION} ; {CARTOGRAPHIE} ; {METHODOLOGIE}},
  address = {{R}ome},
  publisher = {{FAO}},
  series = {},
  pages = {36  multigr.},
  year = {1970},
  URL = {https://www.documentation.ird.fr/hor/fdi:04643},
}