The Geology of the Oil Regions of Warren, Venango, Clarion, and Butler Counties; Including Surveys of the Garland and Panama Conglomerates in Warren and Crawford, and in Chautauqua Co., N. Y., Descriptions of Oil Well Rig and Tools, and a Discussi... 12+

📙 Книга "The Geology of the Oil Regions of Warren, Venango, Clarion, and Butler Counties; Including Surveys of the Garland and Panama Conglomerates in Warren and Crawford, and in Chautauqua Co., N. Y., Descriptions of Oil Well Rig and Tools, and a Discussion of th".Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve to be made available for future generations to enjoy.