TY  - RPRT
TI  - Magnetic inclination in the United States; epoch 1975.0
AU  - N.W. Peddie
AU  - W. J. Jones
AU  - E.B. Fabiano
PY  - 1976
DO  - 10.3133/i912
UR  - https://pubs.usgs.gov/publication/i912
ID  - i912
ER  -