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1programme and meeting document bibliotecaUNESCO
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2by FEANI/Unesco Seminar on Continuing Education of Engineers, Helsinki, 1972, European Federation of National Engineering Associations, Szentmartony, T.programme and meeting document bibliotecaUNESCO
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3by FEANI/Unesco Seminar on Continuing Education of Engineers, Helsinki, 1972, European Federation of National Engineering Associations, Evstafiev, A.programme and meeting document bibliotecaUNESCO
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4by FEANI/Unesco Seminar on Continuing Education of Engineers, Helsinki, 1972, European Federation of National Engineering Associations, Mizushina, Tokuroprogramme and meeting document bibliotecaUNESCO
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5by FEANI/Unesco Seminar on Continuing Education of Engineers, Helsinki, 1972, European Federation of National Engineering Associations, Corbett, Arthur Hardieprogramme and meeting document bibliotecaUNESCO
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6by FEANI/Unesco Seminar on Continuing Education of Engineers, Helsinki, 1972, European Federation of National Engineering Associations, Bose, S.K.programme and meeting document bibliotecaUNESCO
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7by FEANI/Unesco Seminar on Continuing Education of Engineers, Helsinki, 1972, European Federation of National Engineering Associations, Klus, John P.programme and meeting document bibliotecaUNESCO
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8by FEANI/Unesco Seminar on Continuing Education of Engineers, Helsinki, 1972, European Federation of National Engineering Associations, Bogomolov, Anatoly I., Poltev, M.K.programme and meeting document bibliotecaUNESCO