TY  - SER
AU  - Wayland,Russell
ED  - Coal geology symposium: The evaluation of North American coal resources
TI  - New maps of Federal coal
SN  - 00167606
KW  - Carte houillère
KW  - Bassin houillier
KW  - Charbon
KW  - Réserve
KW  - Isopaque
KW  - Forage
KW  - Gisement potentiel
KW  - Coal measures
KW  - Etats Unis
KW  - Wyoming
KW  - Bassin Hanna
KW  - Bassin Powder River
N1  - <Donation ORSTOM>; bibliogr. p. 550
ER  -