TY  - RPRT
TI  - Minor and trace element contents of kimberlites of the Front Range, Colorado and Wyoming
AU  - M. E. McCallum
AU  - C.B. Smith
PY  - 1978
DO  - 10.3133/ofr781011
UR  - https://pubs.usgs.gov/publication/ofr781011
ID  - ofr781011
ER  -