TY  - GEN
AU  - Coles, R.
AU  - 
TI  - Proceedings of the International Workshop on magnetic Observatory instruments. Ottawa, 30 July- 9 Aug. 1986
T2  - Paper 88-17. Geomagnetic Series
VL  - 32
PY  - 1988///
CY  - Ottawa
PB  - Energy, Mines and Resources Canada
KW  - PROSPECÇAO GEOFISICA
KW  - IM
ER  -