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REFERENCES 
Chernosky, E. J., P. F. Fougere, and R. O. Hutchinson, The Geomagnetic 
Field, in Handbook of Geophysics and Space Environments, edited by 
S. L. Valley, McGraw-Hill Book Company, Inc., New York, 11-7 
Don Weese 
Hurwitz, L., D. G. Knapp, J. H. Nelson, and D. E. Watson, Mathematical 
Model of the Geomagnetic Field for 1965, J. Geophys. Res., 71, 2373- 
2383, 1966. 
