TY - BOOK AU - Aston,F.W. TI - Mass spectra and isotopes PY - 1933/// CY - London PB - Edward Arnold KW - Isotopes KW - Spectrum analysis N1 - "Second edition, 1942."; The first edition, issued as a revision of the author's "Isotopes," 1924, was published in 1933; Includes index ER -