TY  - RPRT
TI  - Aeromagnetic and gravity profiles of the United States along the 37th parallel: A contribution to the upper mantle project
AU  - Isidore Zietz
AU  - J.R. Kirby
PY  - 1967
DO  - 10.3133/gp597
UR  - https://pubs.usgs.gov/publication/gp597
ID  - gp597
ER  -