TY - RPRT TI - Distribution of fluorine in unaltered silicic volcanic rocks of the western conterminous United States AU - R.R. Coats AU - W.D. Gross AU - L. F. Rader PY - 1963 DO - 10.2113/gsecongeo.58.6.941 UR - https://pubs.usgs.gov/publication/70221068 ID - 70221068 ER -