Determination of Naturally Occurring Radioactive Materials-Norm (Ra-226, Ra-228) in Synthetic Flowback Developed at Laboratory Scale from Rocks of the La LUNA-1 Well, Colombia, and Benchmarking With Marcellus and Eagle Ford Shale Plays. JETIA 2021, 7 (30), 45-61. https://doi.org/10.5935/jetia.v7i30.770.