(1968). Guidelines for a four-year development program for Mauritania. Washington, D.C: [s.n.].
Παραπομπή Chicago StyleGuidelines for a Four-year Development Program for Mauritania. Washington, D.C: [s.n.], 1968.
Παραπομπή MLAGuidelines for a Four-year Development Program for Mauritania. Washington, D.C: [s.n.], 1968.
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