A FURTHER CONTRIBUTION TO THE PETROLOGY OF HALEAKALA VOLCANO,HAWAII.MACDONALD GA; POWERS HA.1968; GEOL. SOC. AMER., BULL.; USA; 1968(7), VOL. 79, NUM. 0007, P. 877 A 887Miscellaneous

GEOLOGIC MAP OF THE GLENNS FERRY-HAGERMAN AREA, WEST-CENTRAL SNAKE RIVER PLAIN, IDAHO. 1.48.000.MALDE HE; POWERS HA.1972; U.S. GEOL. SURV., MISC. GEOL. INVEST. MAP; USA; 1972, NUM. 0696Miscellaneous

INTERLABORATORY COMPARISON OF SOME CHEMICAL ANALYSES OF HAWAIIAN VOLCANIC ROCKSMACDONALD GA; POWERS HA; KATSURA T et al.1973; BULL. VOLCANOL.; ITAL. ; 1973, VOL. 36, NUM. 0001, P. 127 A 139Serial Issue

GEOLOGY OF THE NEAR ISLANDS, ALASKA. INVESTIGATIONS OF ALASKAN VOLCANOES.GATES O; POWERS HA; WILCOX RE et al.1971; GEOL. SURV. U.S.A., BULL.; USA; 1971, NUM. 1028-0822Miscellaneous

THE BISHOP ASH BED, A PLEISTOCENE MARKER BED IN THE WESTERN UNITED STA- TES.IZETT GA; WILCOX RE; POWERS HA et al.1970; QUATERN. RES.; USA; 1970(9), VOL. 1, NUM. 0001, P. 121 A 132Miscellaneous