TY  - BOOK
AU  - Helfferich,Friedrich G.
TI  - Ion exchange
SN  - 0486687848 (pbk.)
U1  - 541.3723 
PY  - 1995///
CY  - New York
PB  - Dover Publications
KW  - Ion exchange
N1  - Includes bibliographical references and indexes
ER  -