| 2006 |
Return After Flight. Exploring the Decision-Making Process of Sudanese War-Displaced People by Employing an Extended Version of the Theory of Reasoned Action. (ISBN 90 8504 383 2). |
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Humanitarian Action in Protracted Conflicts and Humanitarian Crises: Challenges for Humanitarian and Development Agencies. A Background Paper written for the DARES Foundation to work upon policy and operational response. |
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The Sudanese Protracted Refugee and Internally Displaced People Situation; Challenges for Humanitarian and Development Agencies. A Background Paper written for the DARES Foundation. |
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Los Suelos de Los Paramos de Costa Rica (co-author). Article in: Paramos de Costa Rica (pp 146-160). The Nature Conservancy, 2005 (ISBN 9968 927 09 0). |
| 2005 |
Actor Orientation in Context Analysis and Reconstruction Processes. Background paper for the international symposium ‘Longer-Term Reconstruction in Post-Conflict Situations: How Humanitarian INGOs Can Assist and Contribute’. |
| 2003 |
Resolving Resource Conflicts around Sherkolle Refugee Camp. Magazine on Low External Input and Sustainable Agriculture. September 2003, Volume 19, No. 3. |
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Résoudre les conflits des ressources autour du Camp de Réfugés de Sherkolle. AGRIDAPE. Vol. 19, No 3, Decembre 2003. |
| 1998 |
On the links between Relief and Development. The experience of ZOA Refugee Care in Zambezia province of Mozambique. Background article for the symposium ‘Refugees; a Changing Perspective’ |
| 1995 |
Altitudinal zonation of montane Quercus forests along two transects in Chirripo National Park, Costa Rica. Vegetatio 119: 119-153. Kluwer Academic Publishers. |
| 1992 |
Critical Loads for Dutch Forest Soils. T. Schneider (Editor), Acidification Research, Evaluation and Policy Applications. Elsevier Science Publishers. |
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Assessment of input data for a simple mass balance model to map critical loads for Dutch forest soils. Mapping Critical Loads for Europe, United Nations & Economic Commission for Europe, Convention on Long-Range Transboundary Air Pollution. The Netherlands, 1992. |
| 1991 |
A geological – geomorphological and soil transect study of the Chirripo Massif and adjacent areas, Corderilla de Talamanca, Costa Rica. (Dutch Union Agricultural Catalogue). |
| 1990 |
Conocimientos endogenos y cientificos en determinar de la aptitud de las tierras en el asentamiento Neguev. (Dutch Union Agricultural Catalogue) |
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Conocimiento de los agricultores sobre sus tierras y su aptitud, y un sistema tecnica para la determinacion de la aptitud de las tierras en el asentamiento Neguev. (Dutch Union Agricultural Catalogue) |