TY  - RPRT
TI  - Cosmic-ray variations and the interplanetary sector structures.
AU  - Yoshida, S.
AU  - Akasofu, S.
AU  - Ogita, N.
PY  - 1971
UR  - https://ntrs.nasa.gov/citations/19720027242
ID  - 19720027242
ER  -