00384nam a2200133Ia 4500001000500000005001700005008004100022020001500063082001700078100002100095245009000116260001500206650002900221182220261006003553.0120911s9999    xx            000 0 und d  a9971510952  a543.0893 SEW  aSewell, Peter A.  aAnalytical chemistry by open learning : chromatographic separations / Peter A. Sewell  aJohn Wiley  aChromatographic analysis