help
Gypsiferous Soils. Notes on their Characteristics and Management (Gypsisols) [Monograph]
Alphen, J.G.van \ Rios Romero, F. de los \ 1971
gypsiferous soils - soil management - World
help
Annotated Bibliography on Reclamation and Improvement of Saline and Sodic Soils, 1966-1960. Bibliography no. 6. [Monograph]
Alphen, J.G. van \ Abell, L.F. \ 1967
alkaline soils - bibliographies - saline soils - Solonchaks
help
Land Use Classification Through Overlay Procedures : Research investigating the possibilities to classify land use by combining information from different thematic maps for the northern part of the Atlantic Zone of Costa Rica. [Monograph]
Alphen, J. van \ Benjamins, R.H. \ 1993
land use - land classification - remote sensing - soil - Costa Rica - Central America - Caribbean
help
An Evaluation of the Drainage and Salinity Problem in the Maradah Project : A Report to the Secretariat of Agricultural Reclamation and Land Development of the Socialist People's Libyan Arab Jamahiriya. [Monograph]
Alphen, J.C. van \ 1983
drainage - drainage systems - soil - salinity - Africa - Libya
help
An Evaluation of the Land Drainage Problems in the Eshkeda Irrigation Project, Fezzan Province : A Report to the Secretariat of Agricultural Reclamation and Land Development of the Socialist People's Libyan Arab Jamahiriya. [Monograph]
Alphen, J.C. van \ 1980
drainage - drainage systems - soil - Africa - Libya
help
Problemas de Drenaje Y Salinidad en la Costa Peruana [Monograph]
Alva, C.A. \ Alphen, J.G. van \ Torre, A. de la \ Manrique, L. \ 1976
physical geography - drainage - saline soils - Peru
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