TY  - RPRT
TI  - A discussion of geology, soils, wines, and history of the Napa Valley region
AU  - David G. Howell
AU  - Jonathan P. Swinchatt
PY  - 2000
DO  - 10.1130/0-8137-0002-7.415
UR  - https://pubs.usgs.gov/publication/70073919
ID  - 70073919
ER  -