000			00926nam a22002537a 4500
999			_c7311 _d7311
001			GENERAL-002408
003			EC-OLADE-CDD
005			20161212173040.0
008			160705b xxu||||| |||| 00| 0 spa d
022			_a0-86010-439-7
040			_aOLADE-CDD _cOLADE-CDD
041			_aeng
082			_a665.5 _bU5816
110			_aUnited Nations Economic Commission for Europe
245			_aImproved techniques for the extraction of primary forms of energy
260			_aVienna: _bGraham and Trotman, _c1980
300			_a194 p. _bilustraciones.
504			_a05179
505			_aImproved techniques for the extraction of primary forms of energy : a general overview. Introduction , conclusions and recommendations for futher international co - operation. Consolidated reports. Summary of national papers.
650			_aHidrocarburos
650			_aTecnología
650			_aCongresos y Conferencias
942			_2ddc _cBK