TY  - RPRT
TI  - Interplanetary magnetic field mapping and study of sector evolution
AU  - Ness, N. F.
AU  - Schatten, K. H.
AU  - Wilcox, J. M.
PY  - 1967
UR  - https://ntrs.nasa.gov/citations/19670027064
ID  - 19670027064
ER  -