@misc{indiciae324f9b83ffd7, title = {Acidity and Alkalinity in mine drainage: Practical considerations}, author = {III Cravotta and Carl S. Kirby}, year = {2004}, doi = {10.21000/jasmr04010334}, url = {https://pubs.usgs.gov/publication/70189373}, note = {Source identifier: 70189373} }