Biogenic substances in sediments and fossils.
D000438:Alcohols / Q000032:analysis; D002849:Chromatography, Gas; D004952:Esters / Q000032:analysis; D055593:Geological Phenomena; D005844:Geology; D006838:Hydrocarbons / Q000032:analysis; D007659:Ketones / Q000032:analysis; D010163:Paleontology
D000438:Alcohols; D004952:Esters; D006838:Hydrocarbons; D007659:Ketones