TY  - RPRT
TI  - Geomagnetic polarity epochs
AU  - Allan Cox
AU  - Richard R. Doell
AU  - G. Brent Dalrymple
PY  - 1964
DO  - 10.1126/science.143.3604.351
UR  - https://pubs.usgs.gov/publication/70221818
ID  - 70221818
ER  -