@misc{indiciae8bd7a168bff6,
  title = {Coal resources, new air quality standards, and sustainability},
  author = {Emil D. Attanasi},
  year = {1998},
  doi = {10.1007/bf02764352},
  url = {https://pubs.usgs.gov/publication/70199883},
  note = {Source identifier: 70199883}
}