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1Published 1992Subjects: “...Prospecting United States Geophysical methods....”
Government Document Microform Book -
2by Hill, Patricia L.Subjects: “...Geomagnetism United States....”
Published 1986
Government Document Microform Book -
3by Hill, Patricia L.Subjects: “...Geomagnetism United States....”
Published 1991
Government Document Microform Book -
4by Hill, Patricia L.Subjects: “...Geomagnetism United States Bibliography....”
Published 1986
Government Document Microform Book