000 00371nam a2200157Ia 4500
008 160615s9999 xx 000 0 und d
100 _aBRUCKSHAW(J McG)
245 _aMagnetic variometers of the Schmidt type
260 _aLondon
260 _bHilger & Watts
260 _c1954
300 _aviii p. + 116
942 _cBooks
999 _c6198
_d6198