TY  - BOOK
AU  - Barraclough,D.R.
AU  - Malin,S.R.C.
ED  - Her Majesty΄s Stationery Office
TI  - Synthesis of International Geomagnetic Reference Field Values
T2  - Institute of Geological Sciences : Natural Environment Research Council. 71/1
SN  - 0118801392
U1  - 538.727 
PY  - 1971///.
CY  - London: 
PB  - Her Majesty's Stationery Office, 
KW  - Paleomagnetism
ER  -