This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book. ++++ The below data was compiled from various identification fields in the bibliographic record of this title. This data is provided as an additional tool in helping to ensure edition identification: ++++ The Inflammable Gases In Mine Air George Arthur Burrell, Frank M. Seibert Govt. print. off., 1913 Technology & Engineering; Mining; Flammable gases; Mine atmospheres; Mine gases; Technology & Engineering / Mining

This is a reproduction of a book published before 1923. This book may have occasional imperfectionssuch as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed worksworldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book.++++The below data was compiled from various identification fields in the bibliographic record of this title. This data is provided as an additional tool in helping to ensure edition identification: ++++ Physical And Chemical Properties Of The Petroleums Of The San Joaquin Valley Of California, Volumes 18-21; Volume 19 Of Bulletin (United States. Bureau Of Mines); United States Bureau Of Mines; Physical And Chemical Properties Of The Petroleums Of The San Joaquin Valley Of California; Irving Cowan Allen Irving Cowan Allen, Walter Abraham Jacobs, George Arthur Burrell Govt. Print. Off., 1911 Technology & Engineering; Petroleum; Natural gas; Petroleum; Technology & Engineering / Petroleum