1
World Petroleum Congress. 0009, volume 01 : Tokyo, 11.-16.5.1975. Proceedings. Vol. 1. General volume : Tokyo, 11.05.1975-16.05.1975.
Book
1976
...EFA - Petroleum, natural gas...
2
World Petroleum Congress. 0009, volume 07 : Tokyo, 11.-16.5.1975. Proceedings. vol. 7. Index : Tokyo, 11.05.1975-16.05.1975.
Book
1976
...EFA - Petroleum, natural gas...
3
Rohstoffwirtschaftliche Länderberichte. 6. Argentinien.
Book
Haude, H.
1975
...EFA - Petroleum, natural gas...