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ON SOLUTION OF CERTAIN OVERDETERMINED SYSTEMS OF LINEAR EQUATIONS THAT ARISE IN GEOPHYSICS
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DEFINITIVE MODEL OF GEOMAGNETIC-FIELD AND ITS SECULAR VARIATION FOR 1965 .1. DERIVATION OF MODEL AND COMPARISON WITH IGRF
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MODEL OF GEOMAGNETIC-FIELD AT EPOCH 1975
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A PROPOSED MODEL FOR INTERNATIONAL GEOMAGNETIC REFERENCE FIELD-1965
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SPERICAL HARMONIC ANALYSIS .3. EARTHS MAGNETIC FIELD, 1900-1965
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MEAN-SQUARE VALUES ON SPHERE OF SPHERICAL HARMONIC VECTOR FIELDS
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GEOMAGNETIC SECULAR VARIATION, 1962.5 TO 1967.5
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GEOMAGNETIC SECULAR VARIATION AND ITS CHANGES 1942.5 TO 1962.5
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