00759cam a22002291i 4500 gs 21000177 DLC 20260227111325.0 790222s1921 dcubd f001 0 eng gs 21000177 (OCoLC)4681216 DLC CoU-DA OCoLC DLC premarc QE75 .P9 no. 121 I 19.16:121 Rogers, Gaillard Sherburne, 1889-1919. Helium-bearing natural gas / by G. Sherburne Rogers. Washington : U.S. Gov't. Print. Off., 1921. 113 p. : maps (part fold.), tables, diagrs. ; 29 cm. Geological Survey (U.S.). Professional paper - United States Geological Survey ; no. 121 Natural gas. 26087 26087