00436nam a2200157 a 450000500170000008200180001710000160003524500490005126000310010030000180013163000250014996400160017499700110019099900150020195200620021620251202164242.0  a660.0321bENC  aKirk-Othmer  aEncyclopedia of chemical  technology  vol 20  aNew YorkbJohn Wileyc1982  a981 p.b26 cm  aChemical  technology  bcdefg_  a6252 C  c4979d4979  00104070aPUbPUd1998-04-09l0o660.0321 ENCp6252yBK