TY  - BOOK
AU  - HELFFERICH, FRIEDRICH
TI  - ION EXCHANGE
PY  - 1962///
CY  - NEW YORK.
PB  - MC GRAW-HILL BOOK COMPANY, INC.
UR  - http://krc.immt.res.in:80/cgi-bin/koha/opac-detail.pl?biblionumber=149
ER  -