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1by Seminar on the Contribution of the Social Sciences to Economic Development, Beirut, 1957, Parenti, G.programme and meeting document bibliotecaUNESCO
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2by Seminar on the Contribution of the Social Sciences to Economic Development, Beirut, 1957, Parenti, G.programme and meeting document bibliotecaUNESCO
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3by Seminar on the Contribution of the Social Sciences to Economic Development, Beirut, 1957, Parenti, G.programme and meeting document bibliotecaUNESCO
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4by Seminar on the Contribution of the Social Sciences to Economic Development, Beirut, 1957, Parenti, G.programme and meeting document bibliotecaUNESCO