1
World mineral statistics. 1991-95 : production, exports, imports /
Book
...EXA - Energy policy...
2
World mineral statistics. 1978-82 : production, exports, imports.
Book
...EXA - Energy policy...
3
Jahrbuch für Bergbau, Energie, Mineralöl und Chemie. 1983/84.
Book
Brecht, C.
1983
...EXA - Energy policy...
4
Beyond the age of waste : a report to the Club of Rome /
Book
...EXA - Energy policy...
5
Jahrbuch für Bergbau, Energie, Mineralöl und Chemie. 1980/81.
Book
Brecht, C.
1980
...EXA - Energy policy...