TY - RPRT TI - Improved gas chromatographic method and micro-extraction technique for the measurement of nicotine in biological fluids. AU - C Feyerabend AU - M A Russell PY - 1979 DO - 10.1111/j.2042-7158.1979.tb13435.x UR - https://pubmed.ncbi.nlm.nih.gov/33255/ ID - 33255 ER -