00446nam a2200169   4500001000800000005001700008008000500025010001700030040001900047050001700066082001300083110002600096245002400122260002800146300002600174650007600200405666820150409155853.0000   a   58004763   aUOELcICUdDLC00aTP156.I6bD600a660.29722 aDow Chemical Company.10aDowex ion exchange.  aMidland, Mich.,cc1958.  a75 p.billus.c24 cm. 0aIon exchange.xElectrical engineering, Electronics. Nuclear engineering