00291nam a2200109Ia 4500008004100000082002400041100001800065245003100083260004500114300001000159650001200169140113s9999    xx            000 0 und d  a577.15(047.1) K8.31  a"Nord, F. F."  aAdvances in enzmology v.31  b"London : Interscience publishers, 1968"  a261p.  aEnzymes