00397nam a2200133Ia 4500008004100000040001700041082002300058100001800081245003800099260003100137300001400168650006100182700002000243190327s9999||||xx |||||||||||||| ||und||  aNITILcNITIL  221sta662.42bK96I  aKunin, Robert 0aIon exchange resinscRobert Kunin  aNew YorkbJohn Wileyc1950  axi, 212p.  aIon exchange resins; Chemistry, Aalytic; Water-softening  aMyers, Robert J