00338nam a22001337a 4500020001500000082001700015100001900032245006400051250001200115260003000127300001100157654001700168700001900185  a818128044x  a612.015bDUG  aDugas, Hermann  aBioorganic chemistry : A chemical approach to enzyme action  a3rd ed.  aNew DelhibSpringerc2003  a700 p.  aBiochemistry  aDugas, Hermann