TY  - BOOK
AU  - Laursen, V., ed. 
TI  - Annals of the International Geophysical Year: v. XLVII : selected IGY magnetograms
T2  - Annals of the International Geophysical Year
SN  - 1110649921
PY  - 1969///
CY  - Oxford
PB  - Pergamon Press
KW  - International Geophysical Year
ER  -