Smyth, Piazzi G Micrometrical measures of gaseous spectra under high dispersion Smith G Piazzi - Edinburgh Royal Society of Edinburgh 1884 - [various pagings.] - Transactions of the royal society of edinburgh; v. 32 . Subjects--Topical Terms: MicrometryNASA thesaurusSpectra Universal Decimal Class. No.: 083:52 / SMY