00451nam a2200169 a 450000500170000008200180001710000160003524500460005125000080009726000300010530000180013563000240015396400160017799700110019399900150020495200620021920251202164242.0  a660.0321bENC  aKirk-Othmer  aEncyclopedia of chemical technology Vol 6  a3RD  aNew Yorkbohn Wileyc1979  a869 p.c26 cm  aChemical technology  bcdefg_  a6238 C  c4965d4965  00104070aPUbPUd1998-04-09l0o660.0321 ENCp6238yBK