Acosta HD, Courage JM, Danielson-Francois S. Relationship between vertical depth of the kickoff point of a fracking operation and methane concentrations in groundwater resources. J Stud Res [Internet]. 2017Dec.31 [cited 2024Apr.26];6(2). Available from: https://www.jsr.org/hs/index.php/path/article/view/385