LEADER 00000nam 2200181 a 4500 001 0448765 003 UkHlHU 007 t 008 002810 1 1970 000 eng 040 UkHlHU 050 4 QC 827 S8 100 0 Strangway, David W. 245 00 History of the earth's magnetic field. 260 New York :|bMcGraw Hill,|c1970. 300 168p. 946 020 absent -- ISBN check required 946 6XX absent
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