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1book part bibliotecaUNESCO
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2by Expert Meeting on the Role of New Theoretical Concepts in the Development Process, Ulan Bator, 1980, Miyegombo, G.programme and meeting document bibliotecaUNESCO
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3by Expert Meeting on the Role of New Theoretical Concepts in the Development Process, Ulan Bator, 1980, Miyegombo, G.programme and meeting document bibliotecaUNESCO