TY  - RPRT
TI  - Ancient geomagnetic field intensities—II geological data: Sets G1–G21 historic and archeological data: H10–H13
AU  - Peter J. Smith
PY  - 1967
DO  - 10.1111/j.1365-246x.1967.tb02300.x
UR  - https://pubs.usgs.gov/publication/70210848
ID  - 70210848
ER  -