Each volume consists of maps and explanatory text in portfolio.
Vol. 17 has title: Carte des sols et de la vegetation du Congo et du Ruanda-Urundi; vols. 18- have title: Carte des sols et de la vegetation du Congo, du Rwanda et du Burundi.
Vols. 1-16 published by the institute under its earlier name: Institut national pour l'etude agronomique du Congo belge.
Accompanied by unnumbered provisional summary, "Congo belge et Ruanda-Urundi. A.--[Carte des] sols," 1960.