"Studies of westward electrojets and field-aligned currents in the magnetotail during substorms [microform] : implications for magnetic field models" : final technical report on NASA grant no. NAGW-3953 / principal investigator, Harlan E. Spence ([NASA contractor report] ; 206718)
"Studies of westward electrojets and field-aligned currents in the magnetotail during substorms [microform] : implications for magnetic field models" : final technical report on NASA grant no. NAGW-3953 / principal investigator, Harlan E. Spence
原資料の出版事項: [Washington, DC ; Springfield, Va. : National Aeronautics and Space Administration : National Technical Information Service, distributor, 1996]