TY  - GEN
AU  - Miller,Richard D.
AU  - Hamak,John E.
TI  - Helium resources of the United States, 1989
T2  - Information circular
PY  - 1990///]
CY  - [Washington, D.C.]
PB  - U.S. Dept. of the Interior, Bureau of Mines
KW  - Helium
KW  - United States
ER  -