000 00329nam a2200109Ia 4500
008 220204s9999 xx 000 0 und d
082 _a543.544:546.28
_bUNG
100 _aUnger, K K
245 0 _aPorous silica: Its properties and use as support in column liquid chromatography
260 _aAmsterdam
_bElsevier
_c1979
942 _cBK
999 _c33658
_d33658