TY  - RPRT
TI  - Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska, April 1987
AU  - John B. Townshend
AU  - R. V. O’Connell
AU  - L.Y. Torrence
PY  - 1987
DO  - 10.3133/ofr87300d
UR  - https://pubs.usgs.gov/publication/ofr87300D
ID  - ofr87300D
ER  -