00334nam a2200121Ia 4500008004100000040001500041041001200056082001800068100002500086245004700111260003500158300001900193230917s9999||||xx |||||||||||||| ||und||  e5684aMAIN  aEnglish  a574.1925 S67E  aSumner, James B. ed. 0aEnzymes: chemistry and mechanism of action  aNew YorkbAcademic Pressc1953  ax, 725-1361 p.