The national research council. (1976). Systems analysis and operations research: A tool for policy and program planning for developing countries. Washington D.C: National Academy of sciences.
Παραπομπή Chicago StyleThe national research council. Systems Analysis and Operations Research: A Tool for Policy and Program Planning for Developing Countries. Washington D.C: National Academy of sciences, 1976.
Παραπομπή MLAThe national research council. Systems Analysis and Operations Research: A Tool for Policy and Program Planning for Developing Countries. Washington D.C: National Academy of sciences, 1976.
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