Aromatic components of coal: relation of distribution pattern to rank von Radke, Matthias, Willsch, Helmut, Leythaeuser, Detlev, Teichmüller, Marlies

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Geochemical study on a well in the Western Canada Basin: relation of the aromatic distribution pattern to maturity of organic matter von Radke, Matthias, Welte, Dietrich H., Willsch, Helmut

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Liquid Chromatographic Separation of Sediment, Rock, and Coal Extracts and Crude Oil into Compound Classes von Willsch, Helmut, Clegg, Heather, Horsfield, Brian, Radke, Matthias, Wilkes, Heinz

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Fluoren-9-ones and carbazoles in the Posidonia Shale, Hils Syncline, northwest Germany von Wilkes, Heinz, Clegg, Heather, Disko, Ulrich, Willsch, Helmut, Horsfield, Brian

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Generation of alkylbenzenes and benzo[ b]thiophenes by artificial thermal maturation of sulfur-rich coal von Radke, Matthias, Willsch, Helmut

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Class separation of aromatic compounds in rock extracts and fossil fuels by liquid chromatography von Radke, Matthias, Willsch, Helmut, Welte, Dietrich

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Preparative hydrocarbon group type determination by automated medium pressure liquid chromatography von Radke, Matthias, Willsch, Helmut, Welte, Dietrich H

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