00311nam a2200121Ia 4500008004100000040001500041041001200056082001900068100002300087245003900110260002900149300001100178230917s9999||||xx |||||||||||||| ||und||  e1549aMAIN  aEnglish  a541.3723 C137I  aCalmon, Calvin, ed 0aIon exchange for pollution control  aFloridabCRC Pressc1979  a252 p.