@misc{indiciae49312b6235ee,
  title = {Data acquisition system for magnetotellurics},
  author = {T.P. Grover},
  year = {1992},
  doi = {10.3133/ofr92569},
  url = {https://pubs.usgs.gov/publication/ofr92569},
  note = {Source identifier: ofr92569}
}