TY - BOOK AU - Clarke, Brian AU - Kealey, David, ed. AU - Sewell, Peter A. TI - Chromatographic separations: analytical chemistry by open learning SN - 0471913707 U1 - 543.089 21st ed. PY - 1987/// CY - New York PB - John Wiley and Sons KW - Chemistry, Analytic ER -