@incollection{Tonder13, author = {G. Steyl and G. J. van Tonder}, title = {Hydrochemical and Hydrogeological Impact of Hydraulic Fracturing in the Karoo, South Africa}, booktitle = {Effective and Sustainable Hydraulic Fracturing}, publisher = {IntechOpen}, address = {Rijeka}, year = {2013}, editor = {Andrew P. Bunger and John McLennan and Rob Jeffrey}, chapter = {10}, doi = {10.5772/56310}, url = {https://doi.org/10.5772/56310} }