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1Published 1989### CRL customization ### ?> ### Add publisher and desc details ### ?>Moskva : Akademi︠i︡a nauk SSSR, In-t zemnogo magnetizma, ionosfery i rasprostraneni︠i︡a radiovoln, 1989.196 p. : ill. ; 22 cm.Subjects: “...Geomagnetism Secular variations....”
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2Published 1983### CRL customization ### ?> ### Add publisher and desc details ### ?>Moskva : Akademi︠i︡a nauk SSSR, In-t zemnogo magnetizma, ionosfery i rasprostraneni︠i︡a radiovoln, 1983.186 p. : ill. ; 22 cm.Subjects: “...Geomagnetism Secular variations....”