TY  - GEN
AU  - Delton,Gordon
AU  - Gautier,Donald
AU  - Mast,F
AU  - Root,David
TI  - U: S Geological survey estimates of natural-gas energy resources
T2  - U. S. Geological Survey Professional paper, 1570
KW  - Centre de recherche
KW  - Institution
KW  - Histoire
KW  - Gaz naturel
KW  - Energie
KW  - Etats Unis
N1  - bibliogr. p. 504-506
ER  -