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2-methyl-3-furancarboxylic acid alarmdefense system arch camber ardees Chfn cost incurred in the proceedings deceleration radiator establishment of basic fact invention psychology leaking paddy field liquid-liquid chroma-tography Philostorgius puromellitonitrile rubber base simple rule slipping property Souk-Tleta-du-Rharb tandem unit trinitrosyl weak complex compound