TY  - RPRT
TI  - Bibliography of North American geology, 1949
AU  - Emma Mertins Thom
AU  - Marjorie Hooker
AU  - R.R. Dunaven
PY  - 1951
DO  - 10.3133/b977
UR  - https://pubs.usgs.gov/publication/b977
ID  - b977
ER  -