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Cita Chicago (17th ed.)National Academy of Sciences i The 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.
Cita MLA (9th ed.)National Academy of Sciences i The National Research Council. Systems Analysis and Operations Research: A Tool for Policy and Program Planning for Developing Countries. National Academy of Sciences, 1976.
Atenció: Aquestes cites poden no estar 100% correctes.