TY - RPRT TI - Isocratic multi-column high-performance liquid chromatography as a technique for qualitative analysis and its application to the characterisation of basic drugs using an aqueous methanol solvent. AU - B B Wheals PY - 1980 DO - 10.1016/s0021-9673(00)87874-7 UR - https://pubmed.ncbi.nlm.nih.gov/7358821/ ID - 7358821 ER -