Terpenoids and Steroids: Volume 9, Triterpenoids. J. R. Hanson, J. D. Connolly
, 1979
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Mass Spectrometry: Volume 4, Gas chromatography-mass spectrometry. R. A. W. Johnstone, C. J. W. Brooks, B. S. Middleditch
, 1977
, Volume 4
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