TY - BOOK AU - Mimura, Kōichi, AU - Price, Leigh C. CN - I 19.76: CY - Denver, CO : DA - 1999. ID - 233461 KW - Rocks KW - Organic geochemistry N1 - Cover title. N1 - Distributed to some depository libraries in microfiche. PB - U.S. Dept. of the Interior, U.S. Geological Survey, PP - Denver, CO : PY - 1999. T1 - Delineation of background laboratory contamination in the analysis of trace concentrations of extractable organic materials in crystalline rocks by Soxhlet extraction, column chromotography, and gas chromatography / TI - Delineation of background laboratory contamination in the analysis of trace concentrations of extractable organic materials in crystalline rocks by Soxhlet extraction, column chromotography, and gas chromatography / VL - 99-335 ER -