TY  - RPRT
TI  - The United Nations framework classification for fossil energy and mineral reserves and resources 2009
AU  - Duncan MacDonald
AU  - M. Lynch-Bell
AU  - J. Ross
AU  - S. Heiberg
AU  - C. Griffiths
AU  - T. Klett
PY  - 2011
UR  - https://pubs.usgs.gov/publication/70032646
ID  - 70032646
ER  -