Alkaline-sodic soils and acid-sulphate soils. Lecture notes, International Course on Land Drainage (ICLD), International Institute for Land Reclamation and Improvement (ILRI),Wageningen, The Netherlands. On line. Gearchiveerd op 28 mei 2018.
Chacupe case study. Exercise in the International Course on Land Drainage (ICLD), International Institute for Land Reclamation and Improvement (ILRI), Wageningen, The Netherlands. Data from CENDRET/SUDRET project, Peru, 1968 - 1974. On line. Gearchiveerd op 17 januari 2021.
Alkaline-sodic soils and acid-sulphate soils. Lecture notes, International Course on Land Drainage (ICLD), International Institute for Land Reclamation and Improvement (ILRI),Wageningen, The Netherlands. On line. Gearchiveerd op 28 mei 2018.
Chacupe case study. Exercise in the International Course on Land Drainage (ICLD), International Institute for Land Reclamation and Improvement (ILRI), Wageningen, The Netherlands. Data from CENDRET/SUDRET project, Peru, 1968 - 1974. On line. Gearchiveerd op 17 januari 2021.