00370nam a2200097Ia 4500008004100000082003200041100003300073245010900106260004900215300000800264140113s9999    xx            000 0 und d  a541.18.043:577.1+576.8   L6  a"Hinton, R. and Dobrota, M."  aDensity gradient cetrifugation (Laboratory Techniques in biochemistry and molecular biology vol. 6 Pt.1)  a1976bElsevier Publishing Co.cNorth Holland  a290