00683nam2 22002171i 450 990002274640403321000227464FED01000227464(Aleph)000227464FED0100022746420030801d--------km-y0itay50------baSome aspects of the ultraviolet absorption spectra of the pteridines. London, 1954,p. 74-91.001000221614Mason,S.F.346830ITUNINARICAUNIMARCBK990002274640403321FFABCSome aspects of the ultraviolet absorption spectra of the pteridines. London, 1954,p. 74-91385172UNINAING01