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The recuperation and economic utilization of by-products of the iron and steel industry / Economic Commission for Europe Monografia Publication New York : United Nations, 1990 Description XIV, 231 p. : il. ; 30 cm LocationBiblioteca da UMinho no Campus de Azurém Availability Available (1).

Policies and systems of environmental impact assessment / United Nations, Economic Commission for Europe Monografia Publication New York : United Nations, 1991 Description V, 44 p. ; 30 cm LocationBiblioteca da UMinho no Campus de Azurém Availability Available (1).

Improved techniques for the extraction of primary forms of energy / Seminar of the United Nations Economic Commission for Europe Monografia Publication [London] : Graham & Trotman, [1983] Description VII, 198 p. ; 31 cm LocationBiblioteca da UMinho no Campus de Azurém Availability Available (1).

World industrial robots 1996 / United Nations, Economic Commission for Europe, International Federation of Robotics Monografia Publication New York : United Nations, 1996 Description IV, 240 p. : il. ; 30 cm LocationBiblioteca da UMinho no Campus de Azurém Availability Available (1).