TY  - BOOK
ED  - United Nations Economic Commission for Europe
TI  - Improved techniques for the extraction of primary forms of energy
SN  - 0-86010-4
U1  - 665.5 
PY  - 1980///
CY  - Vienna
PB  - Graham and Trotman
KW  - Hidrocarburos
KW  - Tecnología
KW  - Congresos y Conferencias
N1  - 05179; Improved 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.
ER  -