Magnetic vertical intensity in the United States; epoch 1975.0 (Q112825)

From geokb
Magnetic vertical intensity in the United States; epoch 1975.0; 1976; I; 914; Jones, W. J.; Fabiano, E. B.
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Magnetic vertical intensity in the United States; epoch 1975.0
Magnetic vertical intensity in the United States; epoch 1975.0; 1976; I; 914; Jones, W. J.; Fabiano, E. B.

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