D 1 The Economic and Social Structure of the Fur Tribes, Report on a Field Survey in Jebal Marra, working paper, Faculty of Economics and Social Studies, University of Khartoum, 1962.
D 2 The Level of Living Index in the United Kingdom, 1920‑1965, Discussion Paper, United Nations Research Institute for Social Development, UNRISD, Geneva, 1967.
D 3 The Level of Living Index in the Netherlands, 1920‑1965, Discussion Paper, UNRISD, Geneva, 1968.
D 4 Project Criteria and the Formulation of Social Programmes, Discussion Paper, UNRISD, Geneva, 1969.
D 5 Identification and Treatment of Bottlenecks, a Case Study of Primary Education in Tanzania, Discussion Paper, UNRISD, Geneva, 1969.
D 6 Income Inequalities, Labour Underutilization and Development Policies, working paper, Research Institute for Management Development, Delft, 1973.
D 7 A Research Programme on Manpower Planning, with Special Reference to Vocational Training, Discussion Paper 47, Centre for Development Planning, Erasmus University Rotterdam (EUR), 1979.
D 8 A Conceptual Model of Labour Markets in Developing Countries, Discussion Paper 56, Centre for Development Planning, EUR, January 1980.
D 9 Foreign Sector Appraisal, Discussion Paper 62, Centre for Development Planning, EUR, 1982.
D 10 An Assessment of Returns to Industrial Training in a Developing Country, Discussion Paper 67, Centre for Development Planning, EUR, December 1983.
D 11 Manpower Forecasts for Developing Countries, Discussion Paper 68, Centre for Development Planning, EUR, 1983.
D 12 A Respecification of Capital and Labour in a Traditional Input‑Output Model, Discussion Paper 71, Centre for Development Planning, EUR, February 1984.
D 13 The Debate on Development Economics, Discussion Paper 72, Centre for Development Planning, EUR, February 1985.
D 14 Social Accounting and Development Analysis. An Application to Colombia, Discussion Paper, Centre for Development Planning, EUR, 1986.
D 15 Input-Output versus Social Accounting Matrix Multipliers, Discussion Paper, Institute for Economic Research, EUR, 1986.
D 16 Job Competition and Human Capital in Estimating Returns to Education, Discussion Paper, Institute for Economic Research, EUR, 1986.
D 17 A Social Accounting Matrix of the Netherlands and its Multiplier Properties, Discussion Paper, Institute for Economic Research, EUR, 1987.
D 18 Simulated Patterns of Growth and Distribution in Developing Countries, a Social Accounting Matrix Approach, Discussion Paper 87/1, Growth Dynamics University Institute, EUR, 1987.
D 19 (co‑author) Microeconomic Analysis of the Informal Sector, Results of Sample Surveys, Discussion Paper 87/2, Growth Dynamics University Institute, EUR, 1987.
D 20 (co‑author) Approaches to Applied Studies of the Labour Force, Examples from Pakistan, Discussion Paper 87/3, Growth Dynamics University Institute, EUR, 1987.
D 21 (co‑author) Simulation of Firm Behaviour in a Micro‑Macro Model, Illustration for the Netherlands, Discussion Paper 88/1, Growth Dynamics University Institute, EUR, 1988.
D 22 Economic Theory in a Changing World: New Facts on Allocation Mechanisms of Growth and Income in Indonesia, Discussion Paper 88/4, Growth Dynamics University Institute, EUR, 1988.
D 23 Social Accounting Matrices and the Comparative Analysis of Economic Systems, Discussion Paper 88/5, Growth Dynamics University Institute, EUR, 1988.
D 24 The Construction and Use of a Labour Force Matrix, Discussion Paper 88/6, Growth Dynamics University Institute, EUR, 1988.
D 25 (co‑author) Socio‑economic Mobility in a Developing Country, Discussion Paper 89/1, Growth Dynamics University Institute, EUR, 1989.
D 26 (co‑author) Stepwise Modelling of Industrial Investment Decisions, Discussion Paper 90/1, Growth Dynamics University Institute, EUR, 1990.
D 27 (co‑author) Structural Adjustment Policies for Promoting Growth and Equity, Analytical Frameworks and Policy Issues, Discussion Paper 90/4, Growth Dynamics University Institute, EUR, 1990.
D 28 (co‑author) Social Accounting Matrices and Models. A Simplified Approach towards Analysing Development and Distribution Issues among Population Groups, Discussion Paper 90/5, Growth Dynamics University Institute, EUR, 1990.
D 29 (co‑author) A Comparative Analysis of the Netherlands and Poland within a SAM Framework, Discussion Paper 90/6, Growth Dynamics University Institute, EUR, 1990.
D 30 (co-author) Recent Urban Growth and Distribution in the Netherlands, Discussion Paper, Institute for Economic Research, EUR, 1992.
D 31 (co-author) Labour Market Disequilibrium and Policy Making Approaches in a More Developed Economy. The Case of the Netherlands, Discussion Paper 91/2, Growth Dynamics University Institute, EUR, 1991.
D 32 (co-author) Een SAM voor Nederland in constante prijzen, Discussion Paper, Institute for Economic Research, EUR, 1992.
D 33 (co-author) A Social Accounting Matrix of China, working paper, Growth Dynamics University Institute, EUR, 1992.
D 34 A Long-term Economic Model for the Analysis of Demographic Impact, working paper, Growth Dynamics University Institute, EUR, 1993.
D 35 Economic Growth of Rich and Poor Countries, Discussion Paper, Tinbergen Institute,
TI 96-45/4,1996.
D 36. Employment Imbalances in the Private Sector: Problems, solutions and policies. Research
Report, Centre for Labour Market Research and Information, The Ministry of Labour and
Social Affairs, United Arab Emirates, Dubai, 1999.
D37. Employment Promotion For UAE Nationals, Research
Report, Centre for Labour Market Research and Information, The Ministry of Labour and
Social Affairs, United Arab Emirates, Dubai, 2000.
D 38. (co-author) Productivity Problems in UAE: The Need for Productivity Centres and Policies,
Research Report, Centre for Labour Market Research and Information, The Ministry of Labour and Social Affairs, United Arab Emirates, Dubai, 2001.