TY  - RPRT
TI  - Aeromagnetic map of Montana
AU  - Isidore Zietz
AU  - Francis P. Gilbert
AU  - Stephen L. Snyder
PY  - 1980
DO  - 10.3133/gp935
UR  - https://pubs.usgs.gov/publication/gp935
ID  - gp935
ER  -