00451cam a22001451 4500 541.372 Helfferich, Friedrich G., Ion exchange. New York, McGraw-Hill, 1962. 624 p. illus. McGraw-Hill series in advanced chemistry "The German edition ... appeared in 1959 as the first volume in a series [entitled Ionenaustauscher]" Ion exchange. BK 2584 2584 0 0 0 NFIC IC IC GEN 2015-12-05 0 541.372 HEL 004925 2015-12-05 00:00:00 2015-12-05 REF