Miller, Richard D.
Helium resources of the United States, 1989 / by Richard D. Miller and John E. Hamak. - [Washington, D.C.] : U.S. Dept. of the Interior, Bureau of Mines, [1990] - 14 p. : ill., map - Information circular ; 9267 . - Information circular (United States. Bureau of Mines) ; 9267. .
90002411
Helium--United States.
Helium resources of the United States, 1989 / by Richard D. Miller and John E. Hamak. - [Washington, D.C.] : U.S. Dept. of the Interior, Bureau of Mines, [1990] - 14 p. : ill., map - Information circular ; 9267 . - Information circular (United States. Bureau of Mines) ; 9267. .
90002411
Helium--United States.