PharmacyPharmaceutical AnalysisPharmaceuticsAnalytical ChemistryChromatographic AnalysisAnalytical ChromatographyChromatographyPh AnalysisPka DeterminationAntibiotic PurificationChromatographic Drug AnalysisPaper ChromatographyPh-dependent ExtractionPharmaceutical Extraction
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LELAND A. UNDERKOFLER, RICHARD J. HICKEY · Soil Science · 1954 · 61 citations