000 00480nam a2200157Ia 4500
003 IN-MuIIG
008 231010s9999 xx 000 0 und d
040 _cIIG Library
080 _a550.380.2+550.389
_bWIE
100 _aWienert, K. A.
245 0 _aNotes on geomagnetic observatory and survey practice
_cK. A. Wienert
260 _aParis
_bUnesco
_c1970
300 _a217p.
_billus;bibl;index
650 _aGeomagnetic ObservatoriesGeomagnetismMagnetic Instruments
942 _cBK
999 _c16588
_d16588