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J�nsson, B. A. G.; Lindh, C. H.; Gustavsson, C. A.; Welinder, H.; Pf�ffli, P. . (1996). Determination of cyclic organic acid anhydrides in air using gas chromatography. Part 2. Sampling and determination of hexahydrophthalic anhydride, methylhexahydrophthalic anhydride, tetrahydrophthalic anhydride and octenylsuccinic anhydride. The Analyst, 121(9), 1285–. doi:10.1039/AN9962101285 
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