(1981). Standard spectra collection: 1981 supplementary alphabetical, molecular formula, chemical class index / Sadtler Research Laboratories.
Chicago-viite (17. p.)Standard Spectra Collection: 1981 Supplementary Alphabetical, Molecular Formula, Chemical Class Index / Sadtler Research Laboratories. 1981.
MLA-viite (9. p.)Standard Spectra Collection: 1981 Supplementary Alphabetical, Molecular Formula, Chemical Class Index / Sadtler Research Laboratories. 1981.
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