00283nam a2200109Ia 450000500170000000800410001708200160005810000160007424500280009026000470011830000080016520260224040803.0260224s9999||||xx |||||||||||||| ||und||  a547.758 NOR  aNord, F. E. 0aAdvances in enzymology   aLondon: Interscience Publishers Ltd.c1953  a470