TY  - BOOK
AU  - Bartels, J.
AU  - Romaña, A.
AU  - Veldkamp, J.
TI  - Geomagnetic data Indices K and C, 1962
PY  - 1965///
CY  - Holland
PB  - IUGG Publications
KW  - Geomagnetic data
KW  - Geomagnetic data Indices
ER  -