00441nam a2200181Ia 4500008004100000041001200041082000800053082001100061100001700072100001100089245005600100260001300156260002200169260000900191300001500200365002500215650001900240150909s9999    xx            000 0 und d  aEnglish  a540  bKEL/SE  aKeller R.A    eEditor  aSeparation techniques in chemistry and biochemistry  aNew York  bMarcel Dekker Inc  c1967  a413  Pages  aRs.100                aChromatography