@misc{indiciae97fad87cc037, title = {Review of geochemical reference sample programs since G-1 and W-1: Progress to date and remaining challenges}, author = {J. S. Kane}, year = {1991}, doi = {10.1016/0584-8547(91)80166-z}, url = {https://pubs.usgs.gov/publication/70015624}, note = {Source identifier: 70015624} }