. . . "Geochemical stratigraphy of the Yellowjacket Formation (Middle Proterozoic) in the area of the Idaho Cobalt Belt, Lemhi County, Idaho"@en . . . . . "Geochemical stratigraphy of the Yellowjacket Formation (Middle Proterozoic) in the area of the Idaho Cobalt Belt, Lemhi County, Idaho. Part A, Discussion"@en . . "Yellowjacket geochemical data"@en . . . . . . . . . . . . . "Geochemistry Idaho Lemhi County Computer disks." . . "From 570 million to 2 billion years ago" . . . . "Geology, Stratigraphic Proterozoic Computer disks." . . "Yellowjacket Formation (Idaho)" . .