TY  - BOOK
AU  - Gottingen, Julius Bartels
TI  - Collection of geomagnetic planetary indices Kp and derived daily indices, Ap and Cp for the years
U1  - 538.7  GOT-C 
PY  - 1962///
CY  - North-Holland Physics Publishing Co., Amsterdam
KW  - geomagnetism
ER  -