TY  - GEN
AU  - Halbouty,Michel
TI  - Reflections after 62 years of exploration
T2  - U. S. Geological Survey Professional paper, 1570
KW  - Gaz naturel
KW  - Ressource énergétique
KW  - Exploration
KW  - Histoire
KW  - Etats Unis
ER  -