000 00297nam a2200109Ia 4500
008 201201s9999 xx 000 0 und d
082 _a510.74102
100 _aTHOMTON, A.G.
245 0 _aMATHEMATICAL DRAWINGS INSTRUMENTS AND MATERIAL
260 _bLONDON, PERCIVAL MARSHALL & CO.
_c0
942 _cOB
999 _c16885
_d16885