Finding Oil, The Nature of Petroleum Geology, 1859-1920, Nebraska, Brian Frehner,Petroleum technology,Fossil fuel technologies, Oil;John D. Rockefeller;Natural History;Geography,, , United States, en-UShttps://www.nebraskapress.unl.eduOil;John D. Rockefeller;Natural History;Geography, [BLURB],[CITY],Nebraska,books, ebooks, biblet, Book2look