TY  - BOOK
AU  - Helfferich F
AU  -  Klein G
TI  - Multicomponent chromatography
T2  - Chromatographic science: Series of monographs; 4
U1  - E:3,E1, L0 
PY  - 1970///
CY  - New York    
PB  -  Marcel Dekker       
KW  -  Chromatographic analysis
KW  - Chemistry
ER  -