TY  - RPRT
TI  - Zirconium and hafnium
AU  - James V. Jones
AU  - Nadine M. Piatak
AU  - George M. Bedinger
PY  - 2017
DO  - 10.3133/pp1802v
UR  - https://pubs.usgs.gov/publication/pp1802V
ID  - pp1802V
ER  -