Showing 1 - 10 of 33
Persistent link: https://www.econbiz.de/10000659842
"... a universally applicable scheme for classifying/evaluating energy and mineral reserves and resources -- it is the …, the needs of applications pertaining to international energy and mineral studies, government resource management functions …
Persistent link: https://www.econbiz.de/10009259619
Persistent link: https://www.econbiz.de/10000144445