. . . "Juvenile works" . "Juvenile works"@en . "Frontier scientist: Clarence King" . "Frontier scientist: Clarence King"@en . . . . . . . . . . "A biography of the geologist who first organized and directed the United States Geological Survey and explored and mapped many isolated areas of the United States." . "A biography of the geologist who first organized and directed the United States Geological Survey and explored and mapped many isolated areas of the United States."@en . "Biography" . "Biography"@en . . .