TY - BOOK AU - VCH[Germany] TI - Thin-layer chromatographic Rf values of toxicologically relevant substances on standardized system SN - 3-527-27397-2. U1 - 543.08956 PY - 1992/// CY - Germany PB - VCH N1 - TIAFT: The international association of fornasic toxicologists. Report, xvii ER -