00630nam2 22002171i 450 990002353260403321000235326FED01000235326(Aleph)000235326FED0100023532620030801d--------km-y0itay50------baStandard solutions and certified reference materials.p. 640-648.001000222849Alvarez,Robert99666ITUNINARICAUNIMARCBK990002353260403321FFABCStandard solutions and certified reference materials.p. 640-648441925UNINAING01